x^2 +7x+6 = (x+1)(x+6) when factored
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x2 + 7x = 2x2 + 6 x2 - 2x2 + 7x = 6 -x2 +7x - 6 = 0 or alternatively x2 - 7x + 6 = 0
i got 42 divided 7x
-x2 + x + 42= -x2 + 7x - 6x + 42= 7x - x2 + 42 - 6x= x(7 - x) + 6(7 - x)= (7 - x)(x + 6)
x2- 7x + 6 = 0 factor, (x-6)(x-1) = 0 x = 6 x = 1
It is: (x+1)(x+6) when factored