Question

If x = -2, then x 2 - 7x + 10 equals

Answer 1

X² - 7x + 10.

When x = -2.

x² - 7x + 10 =  (-2)² - 7*(-2) + 10

                   =  4 + 14 + 10

                   = 28.

I hope this helps.  

Answer 2

2-7x +10 =6
2-7(-2)+10
2-14+10
-16+10
-6
PEMDAS