What is the value of the expression below when w=4 ? 7w^(2)-7w-3 Answer:

Substitute w=4: Substitute the value of w into the expression. We are given the expression 7w^(2)-7w-3 and we need to substitute w=4 into this expression. 7(4)^(2) - 7(4) - 3Calculate square of w: Calculate the square of w, which is 4 in this case. (4)^(2) = 16 Now we can rewrite the expression with this value. 7(16) - 7(4) - 3Multiply by 7: Multiply 7 by the square of w. 7(16) = 112 Now the expression looks like this: 112 - 7(4) - 3Update expression: Multiply 7 by w, which is 4. 7(4) = 28 Now we can update the expression: 112 - 28 - 3Subtract 28: Subtract 28 from 112. 112 - 28 = 84 Now the expression is: 84 - 3Final value: Subtract 3 from 84. 84 - 3 = 81 This is the final value of the expression when w=4.

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What is the value of the expression below when
w=4 ?

7w^(2)-7w-3
Answer:

What is the value of the expression below when $w=4$ ? $\newline$ $7 w^{2}-7 w-3$ $\newline$ Answer:

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Math Problems

Algebra 2

Composition of linear and quadratic functions: find a value

Full solution

Q. What is the value of the expression below when

w=4

\newline

7 w^{2}-7 w-3

\newline

Answer:

Substitute $w=4$ : Substitute the value of $w$ into the expression. $\newline$ We are given the expression $7w^{2}-7w-3$ and we need to substitute $w=4$ into this expression. $\newline$ $7(4)^{2} - 7(4) - 3$
Calculate square of $w$ : Calculate the square of $w$ , which is $4$ in this case. $\newline$ $(4)^{2} = 16$ $\newline$ Now we can rewrite the expression with this value. $\newline$ $7(16) - 7(4) - 3$
Multiply by $7$ : Multiply $7$ by the square of $w$ . $\newline$ $7(16) = 112$ $\newline$ Now the expression looks like this: $\newline$ $112 - 7(4) - 3$
Update expression: Multiply $7$ by $w$ , which is $4$ . $\newline$ $7(4) = 28$ $\newline$ Now we can update the expression: $\newline$ $112 - 28 - 3$
Subtract $28$ : Subtract $28$ from $112$ . $\newline$ $112 - 28 = 84$ $\newline$ Now the expression is: $\newline$ $84 - 3$
Final value: Subtract $3$ from $84$ . $\newline$ $84 - 3 = 81$ $\newline$ This is the final value of the expression when $w=4$ .