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Flaxdalton1216 ∙
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2x = x2 + 4x - 3 x2 + 2x - 3 = 0 (x - 1)(x - 2) = 0
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x2+3=124 x2=121 x= square root(121) x=11
x2 + 2x - 15 = (x - 3)(x + 5)
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