Question

- x2 + 3x – 7 when x = 4

Answer 1

-3

Explanation:

-4•2+3•4-7

-8+3•4-7

-8+12-7

4-7

-3

Answer 2

-11

Explanation:

-x^2 +3x-7

Let x=4

-(4)^2 +3(4) -7

Exponents first

-16 +12-7

-4-7

-11