Question

Evaluate the expression when b=5

Answer 1

9.
`35^(2)` or 1225

12.
`15^(2)` or 225

Explanation:

Put 5 instead of b

9.
`(7b)^(2)`

=
`(7 * 5)^(2)`

=
`35^(2)` or 1225

12.
`(3b)^(2)`

=
`( 3 * 5)^(2)`

=
`15^(2)` or 225