x^2-( x + 1)(x+2) by divided by5x+1=6
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X^2-(X+1)(X+2)=30x+6
x^2-(x^2+2x+X+2)=30x+6
x^2-x^2-2x-x-2=30x+6
-3x-2=30x+6
-8=33x
X=-8/33
x^2-(x^2+2x+X+2)=30x+6
x^2-x^2-2x-x-2=30x+6
-3x-2=30x+6
-8=33x
X=-8/33
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