Question

Consider this expression.

√a³ - 7+|b|
When a = 2 and b =
-4, the value of the expression is

Answer 1

the answer is 1

Explanation:

2^(3/2) - 7 + /-4/

2^(3/2) - 7 + 4

2^(3/2) - 7 + 2^2

2^(3/2) + 2^2 - 7

laws of indices reversed

2^(3/2×2) - 7

2^3 - 7

8 - 7

1