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2(2x - 1)(2x + 1)
8x2-2x-15 = 0 (2x-3)(4x+5) = 0 x = 3/2 or x = -5/4
8x2-2x-3=0 (2x+1)(4x-3)=0 2x+1=0 or 4x-3=0 x=-1/2 or x=3/4
8x2+6x-35 = (2x+5)(4x-7) when factored
They add up to: 8x2