Question

evaluate the expression

Answer 1

Just plug in 5 for 'x':

$\sf 5\cdot (x-3)^2-7$

$\sf 5\cdot (5-3)^2-7$

Parenthesis first, subtract:

$\sf 5\cdot (2)^2-7$

Exponent next:

$\sf 5\cdot 4-7$

Now multiplication:

$\sf 20-7$

Finally, subtract:

$\boxed{\sf 13}$