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4(-1.5x-2.5)^2-9x^2+18x-45=0
We add all the numbers together, and all the variables
-9x^2+18x+4(-1.5x-2.5)^2-45=0
We move all terms containing x to the left, all other terms to the right
-9x^2+18x+4(-1.5x-2.5)^2=45
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