Question

What value completes the square for the expression? show work?

x2 + 14x

Answer 1

x^2 + bx -> take half of b and then square that. (b/2)^2

Answer 2

In this example, b = 14

Answer 3

okay thank you!

Answer 4

Take 1/2 of the number in front of the x (14) and square it. So 1/2 of 14 is 7 and 7 squared is 49
x^2 + 14x + 49
= (x + 7)(x + 7)
= (x + 7)^2
Answer: 49