Question

Multiply. (x – 10)(x – 10)

x2 – 100

x2 – 20x + 100

x2 – 20x – 100

x2 + 100

Answer 1

x2 - 20x + 100

Answer 2

x2 - 20x +100

Answer 3

(x - 10) (x - 10) = x2 -10x - 10x + 100 = x2 - 20x + 100

Answer 4

100+x^2-20x

Answer 5

x^2 - 20x + 100

Answer 6

@alanli123 is right.

This is a formula:
(x+y)^2 = x^2 + 2xy +y^2

Answer 7

x * x = x^2
x * -10 = -10x
x * -10 = -10x
-10 * -10 = 100
Then add the -10x's
and then you get x^2 - 20x + 100.

Answer 8

Thank you guys! I chose him as the best answer because he replied first