3(x^2-1)-((3x+1)(x+1)=0

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Solution for 3(x^2-1)-((3x+1)(x+1)=0 equation: 



3(x^2-1)-((3x+1)(x+1)=0

We multiply parentheses

3x^2-((3x+1)(x+1)-3=0

We multiply parentheses ..

3x^2-((+3x^2+3x+x+1)-3=0

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