Factors of -8 are -1 & 8, -2 & 4, -4 & 2 and -8 & 1.
Only -4 & 2 add to -2 so factors are (x + 2)(x - 4)
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5x2=8x Divide with x on both sides5x= 8 Solve xx=8/5
Factor it. (x - 8)(x - 2) x = 2, 8
(7x + 8)(7x - 9)
It is: (x+5)(x-8) when factored
3x^2 + 5x - 8 = 0 + 8 + 8 3x^2 + 5x = 0 8x ^2 = 0