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Log[(x+2)(x-1)]=1
10^1=(x+2)(x-1)
10=x^2 + x - 2
X^2 + x - 2 - 10=0
X^2 + x - 12 = 0
(x+4) (x-3)=0
X+4= 0 x-3=0
X=-4 x=3