If that's + 80, the answer is -4(x + 5)(x - 4)
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4x2 + 8x + 4 = 4 (x2 + 2x + 1) = 4 (x + 1)2
(x + 3)(4x + 5)
4x2+13x+3 m*n=(4*3)=12 m+n=13 m=12 n=1 (4x/12)=(x/3) (4x+1)(x+3)
4x2+29x-24 = (4x-3)(x+8) when factored
(4x + 1)(x + 5)