(30-2x)x(30-2x)=400

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Solution for (30-2x)x(30-2x)=400 equation: 



(30-2x)x(30-2x)=400

We move all terms to the left:

(30-2x)x(30-2x)-(400)=0

We add all the numbers together, and all the variables

(-2x+30)x(-2x+30)-400=0

We move all terms containing x to the left, all other terms to the right

(-2x+30)x(-2x+30)=400

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