Question

Consider this expression.(The square root of a to the power of 3 - 7 )+ lbl When a = 2 and b = -4, the value of the expression is

Answer 1

Given that: a = 2, b = -4

$\sqrt{a^3-7}\text{ + |b| = }\sqrt{2^3-7}\text{ + |-4| = }\sqrt{8-7}\text{ }+\text{ 4 = }\sqrt{1}+\text{ 4 = 1 + 4 = 5}$