(x-2)(x+1)=1/2. find x.
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Answer:(x-2)(x+1)=1/2
x(x+1)-2(x+1)=1/2
x^2+x-2x-2=1/2
x^2-x-2=1/2
2x^2-2x-4=1
2x^2-(4-2)x-4=1
2x^2-4x+2x-4=1
2x(x-2)+2(x-2)=1
(2x+2)(x-2)=1
Either,
2x+2=1
2x=1-2
X=-1/2
X-2=1
X=1+2
X=3
Step-by-step explanation:
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