Question

Consider this expression.a3 – 7 + 18When a2 and 6-4, the value of the expression isWhat

Answer 1

the value of the expression is 5

Explanation:

note that the absolute value function always gives a positive value , that is

| - a | = | a | = a

given

`√(a^3-7)` + | b | ← substitute a = 2 and b = - 4

=
`√(2^3-7)` + | - 4 |

=
`√(8-7)` + | 4 |

=
`√(1)` + 4

= 1 + 4

= 5