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3=x+3-5x subtract 3 from both sides 0=x-5x combine 0=-4x 0=x
4x2 - x - 3 = 0 (x - 1)(4x + 3) = 0 So x - 1 = 0 or 4x + 3 = 0 ie x = 1 or = -3/4 = -0.75
2x2 - x - 15 = 0(2x + 5) (x - 3) = 0[2x + 5 = 0] and [x - 3 = 0]x = -5/2 and x = 3{-2.5, 3}
2x2+5x-3 = 0 (2x-1)(x+3) = 0 x = 1/2 or x -3
x = 0