+156 What value completes the square for the expression?
1. x^2 + 12x
a. −36
b. −6
c. 6
d. 36
2. x^2 - 8x
a. 4
b. -4
c. 16
d. -16
3. x^2 - 18x
a. 81
b. -9
c. -81
d. 9
Thank you!
+129933
This is pretty simple....believe it, or not !!!
1. x^2 + 12x
Take 1/2 of 12 = 6
Square this = 6^2 = 36.....and that's what we need to add to complete the square !!!!
2. x^2 - 8x
Take (1/2) of -8 = -4
Square this = (-4)^2 = 16
3. x^2 - 18x
Take (1/2) of -18 = -9
Square this (-9)^2 = 81
