0
Anonymous
x2 + 2x - 15 = 0
(x + 5) (x - 3) = 0
x = -5
x = +3
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x=1
4
what is -12X squared +28X - 15? i figured it out myself. its (-6X + 5)(2X - 3).
(2x+3)(x+3)
(5x 2 - 8x + 1) + (2x 2 - 4x - 11)