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Which quadratic equation is equivalent to (x+2)2+5(x+2)-6=0

Which quadratic equation is equivalent to (x+2)2+5(x+2)-6=0
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Which quadratic equation is equivalent to (x+2)2+5(x+2)-6=0

User Plang
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(x+2)^2+5(x+2)-6=0\\\\x^2+2\cdot x\cdot2+2^2+5\cdot x+5\cdot2-6=0\\\\x^2+4x+4+5x+4-6=0\\\\x^2+9x+2=0
User Chris Leyva
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