Please help show all work include step by step work please

Evaluate each polynomial for x = −2.
x^2 − 3x + 6

16.

All you need to do is plug in -2 wherever there is a x in the equation.

so
(-2)^2 - 3(-2) + 6
4 - -6 + 6
4 + 6 + 6 = 16