Q. Simplify the expression completely.49+43−1000−31+−9Answer:
Simplify 49: First, we will simplify each term in the expression separately.The first term is 49, which is the square root of 49.Calculating the square root of 49 gives us 7, since 7×7=49.
Calculate 43−1000: The second term is 43−1000, which is 4 times the cube root of −1000. The cube root of −1000 is −10, since (−10)×(−10)×(−10)=−1000. Multiplying this by 4 gives us 4×(−10)=−40.
Find cube root of 1: The third term is 31, which is the cube root of 1.The cube root of 1 is 1, since 1×1×1=1.
Evaluate −9: The fourth term is −9, which is the square root of a negative number. The square root of a negative number is not a real number; it is an imaginary number. Since we are looking for real-number roots, −9 does not have a real value.
Combine simplified terms: Now, we combine the simplified terms: 7 (from 49) - 40 (from 43−1000) - 1 (from 31). The term −9 is not included because it is not a real number. Adding and subtracting the real numbers gives us 7−40−1=−34.