Question

Evaluate the given expression for x=7

Answer 1

63

Explanation:

Given the expression:

`\displaystyle{x^2+3x-7}`

Substitute x = -7:

`\displaystyle{7^2+3(7)-7}`

Evaluate:

`\displaystyle{(7)(7)+3(7)-7}\\\\\displaystyle{=49+21-7}\\\\\displaystyle{=63}`