Question

Evaluate the following expression x^2 - 4x + 2 when x = -2

Answer 1

14

Explanation:

Well since we know that x= -2 we can plug it into the equation

-2^2-4*-2+2

Now we can solve

-2^2 - 4*2+2

= 14

Answer 2

-2

Explanation:

sub x = -2 into X^2 - 4 x + 2

-2^2 - 4(2) + 2

= 4 - 8 + 2

= -4 + 2

= -2