(x + 3)(x + 3)
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1x^2-6x+91X9 IS 9What multiplies to get 9 and adds to get -6? -3x-3So, (x-3)(x-3)
x2 - 6x - 27 = (x-9)(x+3)
x2-6x+9 = (x-3)(x-3) when factorised.
x^2-6x+9 (x-3)(x-3)
5x^2 + 6x + 9 + (?) = -x^2 +3x + 3 (?) = -5x^2 -6x - 9 -x^2 +3x + 3 = -6x^2 -3x -6 Ans: -6x squared +3x -6