(x+2)³ =x³-4 check wheather the following are quadratic equation l
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(x+2)^3=x^3-4. x^3+6x^2+12x+8=x^3-4. 6x^2+12x+12=0. x^2+2x+2=0. (x+1)^2= -1. x+1=+ √-1. or x+1=-√-1. x=i-1 or. x=-i-1
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