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3x^2(2.50+x)=31.50
We move all terms to the left:
3x^2(2.50+x)-(31.50)=0
We add all the numbers together, and all the variables
3x^2(x+2.5)-(31.5)=0
We add all the numbers together, and all the variables
3x^2(x+2.5)-31.5=0
We move all terms containing x to the left, all other terms to the right
3x^2(x+2.5)=31.5
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