-14x^2+13x-5
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4x2 = 8, 8-9 = -1 therefore the answer is "-1"
7x + 8 = 36 - 8 = - 8 -------------- 7x = 28 7x/7 = 28/7 x = 4
x2+7x-8 = (x-1(x+8)
3/7x + 5 = 87x(3/7x + 5) = 8(7x)3(7x/7x) + (7x)(5) = 8(7x)3 + 35x = 56x3 + 35x - 35x = 56x - 35x3 = 21x3/21 = 21x/211/7 = x
x2+7x-8 = (x-1(x+8)