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Math Problems
Grade 8
Multiply numbers written in scientific notation
Simplify:
(
10
)
(
$
3.75
)
(10)(\$3.75)
(
10
)
(
$3.75
)
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Multiply.
\newline
−
8
(
7
x
2
+
5
)
-8\left(7 x^{2}+5\right)
−
8
(
7
x
2
+
5
)
\newline
Answer:
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Find the sum of the first
45
45
45
terms in this geometric series:
\newline
−
0.5
+
1.5
−
4.5
…
-0.5+1.5-4.5 \ldots
−
0.5
+
1.5
−
4.5
…
\newline
Choose
1
1
1
answer:
\newline
(A)
−
7.39
⋅
1
0
20
-7.39 \cdot 10^{20}
−
7.39
⋅
1
0
20
\newline
(B)
−
4.92
⋅
1
0
20
-4.92 \cdot 10^{20}
−
4.92
⋅
1
0
20
\newline
(C)
−
3.69
⋅
1
0
20
-3.69 \cdot 10^{20}
−
3.69
⋅
1
0
20
\newline
(D)
1.23
⋅
1
0
20
1.23 \cdot 10^{20}
1.23
⋅
1
0
20
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Multiply and simplify the following complex numbers:
\newline
(
5
+
2
i
)
⋅
(
−
5
−
i
)
(5+2 i) \cdot(-5-i)
(
5
+
2
i
)
⋅
(
−
5
−
i
)
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Multiply and simplify the following complex numbers:
\newline
(
5
−
5
i
)
⋅
(
−
3
+
5
i
)
(5-5 i) \cdot(-3+5 i)
(
5
−
5
i
)
⋅
(
−
3
+
5
i
)
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Multiply and simplify the following complex numbers:
\newline
(
3
−
4
i
)
⋅
(
−
3
+
2
i
)
(3-4 i) \cdot(-3+2 i)
(
3
−
4
i
)
⋅
(
−
3
+
2
i
)
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Multiply and simplify the following complex numbers:
\newline
(
2
+
5
i
)
⋅
(
5
−
3
i
)
(2+5 i) \cdot(5-3 i)
(
2
+
5
i
)
⋅
(
5
−
3
i
)
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Multiply and simplify the following complex numbers:
\newline
(
4
+
4
i
)
⋅
(
−
2
−
5
i
)
(4+4 i) \cdot(-2-5 i)
(
4
+
4
i
)
⋅
(
−
2
−
5
i
)
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Multiply and simplify the following complex numbers:
\newline
(
1
+
i
)
⋅
(
3
−
5
i
)
(1+i) \cdot(3-5 i)
(
1
+
i
)
⋅
(
3
−
5
i
)
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Multiply and simplify the following complex numbers:
\newline
(
−
2
−
3
i
)
⋅
(
−
5
−
2
i
)
(-2-3 i) \cdot(-5-2 i)
(
−
2
−
3
i
)
⋅
(
−
5
−
2
i
)
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Multiply and simplify the following complex numbers:
\newline
(
−
4
+
4
i
)
⋅
(
3
+
2
i
)
(-4+4 i) \cdot(3+2 i)
(
−
4
+
4
i
)
⋅
(
3
+
2
i
)
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Multiply and simplify the following complex numbers:
\newline
(
−
4
−
5
i
)
⋅
(
1
−
i
)
(-4-5 i) \cdot(1-i)
(
−
4
−
5
i
)
⋅
(
1
−
i
)
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Multiply and simplify the following complex numbers:
\newline
(
−
1
−
5
i
)
⋅
(
1
−
2
i
)
(-1-5 i) \cdot(1-2 i)
(
−
1
−
5
i
)
⋅
(
1
−
2
i
)
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Multiply and simplify the following complex numbers:
\newline
(
1
−
5
i
)
⋅
(
3
−
2
i
)
(1-5 i) \cdot(3-2 i)
(
1
−
5
i
)
⋅
(
3
−
2
i
)
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Multiply and simplify the following complex numbers:
\newline
(
3
−
3
i
)
⋅
(
−
2
+
2
i
)
(3-3 i) \cdot(-2+2 i)
(
3
−
3
i
)
⋅
(
−
2
+
2
i
)
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Multiply and simplify the following complex numbers:
\newline
(
−
3
−
2
i
)
⋅
(
−
4
+
2
i
)
(-3-2 i) \cdot(-4+2 i)
(
−
3
−
2
i
)
⋅
(
−
4
+
2
i
)
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Multiply and simplify the following complex numbers:
\newline
(
1
−
4
i
)
⋅
(
−
4
+
2
i
)
(1-4 i) \cdot(-4+2 i)
(
1
−
4
i
)
⋅
(
−
4
+
2
i
)
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Multiply and simplify the following complex numbers:
\newline
(
−
3
−
i
)
⋅
(
3
+
i
)
(-3-i) \cdot(3+i)
(
−
3
−
i
)
⋅
(
3
+
i
)
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Multiply and simplify the following complex numbers:
\newline
(
−
4
+
2
i
)
⋅
(
4
−
4
i
)
(-4+2 i) \cdot(4-4 i)
(
−
4
+
2
i
)
⋅
(
4
−
4
i
)
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Multiply and simplify the following complex numbers:
\newline
(
−
1
−
3
i
)
⋅
(
−
1
+
i
)
(-1-3 i) \cdot(-1+i)
(
−
1
−
3
i
)
⋅
(
−
1
+
i
)
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Multiply and simplify the following complex numbers:
\newline
(
1
+
2
i
)
⋅
(
1
−
4
i
)
(1+2 i) \cdot(1-4 i)
(
1
+
2
i
)
⋅
(
1
−
4
i
)
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Multiply and simplify the following complex numbers:
\newline
(
2
−
2
i
)
⋅
(
4
−
4
i
)
(2-2 i) \cdot(4-4 i)
(
2
−
2
i
)
⋅
(
4
−
4
i
)
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Multiply and simplify the following complex numbers:
\newline
(
−
2
+
4
i
)
⋅
(
5
+
i
)
(-2+4 i) \cdot(5+i)
(
−
2
+
4
i
)
⋅
(
5
+
i
)
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Multiply and simplify the following complex numbers:
\newline
(
2
−
i
)
⋅
(
−
3
+
2
i
)
(2-i) \cdot(-3+2 i)
(
2
−
i
)
⋅
(
−
3
+
2
i
)
Get tutor help
Multiply and simplify the following complex numbers:
\newline
(
−
2
+
2
i
)
⋅
(
5
+
5
i
)
(-2+2 i) \cdot(5+5 i)
(
−
2
+
2
i
)
⋅
(
5
+
5
i
)
Get tutor help
Multiply and simplify the following complex numbers:
\newline
(
1
+
5
i
)
⋅
(
−
3
−
i
)
(1+5 i) \cdot(-3-i)
(
1
+
5
i
)
⋅
(
−
3
−
i
)
Get tutor help
Multiply and simplify the following complex numbers:
\newline
(
−
4
−
4
i
)
⋅
(
−
5
−
3
i
)
(-4-4 i) \cdot(-5-3 i)
(
−
4
−
4
i
)
⋅
(
−
5
−
3
i
)
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Multiply and simplify the following complex numbers:
\newline
(
−
1
+
4
i
)
⋅
(
4
−
3
i
)
(-1+4 i) \cdot(4-3 i)
(
−
1
+
4
i
)
⋅
(
4
−
3
i
)
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Multiply and simplify the following complex numbers:
\newline
(
1
−
2
i
)
⋅
(
4
+
i
)
(1-2 i) \cdot(4+i)
(
1
−
2
i
)
⋅
(
4
+
i
)
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