You can put this solution on YOUR website! x^2 - 20x + 100
(x____)(x_____)
We need to fill the blanks with two numbers that multiply to get the last term, 100. But add together to get the coefficient of the middle term, -20.
-10*-10=100
-10+-10=-20
(x-10)(x-10)
(x-10)^2
Happy Calculating!!!