x=7
Wiki User
∙ 2010-01-01 18:10:22Yes because if x2-14x+49 then it is (x-7)(x-7) when factored
x2-14x+49 (x-7)2 or (x-7)(x-7)
x2+14x+49 = (x+7)(x+7) when factored
2x2 + 21x + 49= 2x2 + 14x + 7x + 49= 2x(x + 7) + 7(x + 7)= (x + 7)(2x + 7)
63
Yes because if x2-14x+49 then it is (x-7)(x-7) when factored
(x2 + 14x + 49) = (x + 7)2
35
x2-14x+49 (x-7)2 or (x-7)(x-7)
14x(x + 2)
x2 - 14x + 49(x - 7) (x - 7)
x2+14x+49 = (x+7)(x+7) when factored
2x2 + 21x + 49= 2x2 + 14x + 7x + 49= 2x(x + 7) + 7(x + 7)= (x + 7)(2x + 7)
x2 - 14x + 49 = (x - 7)2
if its x(squared) its 7x(cubed) if its 2xX its 14x(squared)
63
(x - 8)(x - 6)