Question

What value should be added to the expression to create a perfect square?

x2 – 20x

Answer 1

Any ideas?

Answer 2

25, -25, 100, or -100

Answer 3

$$\Huge x^2-20x$$

Answer 4

100?

Answer 5

yes

Answer 6

$$\Huge x^2-20x +100=(x-10)^2$$

Answer 7

$$\Huge a^2-2ab +b^2=(a-b)^2$$

Answer 8

thanks!

Answer 9

Thanks for asking :)