( x + 1 ) ² − 6 (x + 1) + 8
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Step-by-step explanation:
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Step-by-step explanation:
x^2+1+2x-6x-6=0
x^2-4x-5=0
x^2+x-5x-5=0
x(x+1)-5(x+1)=0
x=-1,+5
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