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}`