Question

Simply the expression$-5+2{(-3)}^2-9$

Short answer

Simplified form of $-5+2{(-3)}^2-9is4.$

Step-by-step solution

Step1  . Given information

Given expression is $-5+2{(-3)}^2-9$.

To simplify the given expression first to work with exponent and then do the rest of the addition and subtraction .

Step 2  . Solving the expression

When do the exponent we get ${(-3)}^2=9$.Then

$$\begin{gathered} -5+2{(-3)}^2-9=-5+2\times 9-9 \\ =-5+18-9 \\ =-5+9 \\ =4 \end{gathered}$$