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1/0.25x^2+7=2.5x^2+8.5
We move all terms to the left:
1/0.25x^2+7-(2.5x^2+8.5)=0
Domain of the equation: 0.25x^2!=0We get rid of parentheses
x^2!=0/0.25
x^2!=√0
x!=0
x∈R
-2.5x^2+1/0.25x^2-8.5+7=0
We multiply all the terms by the denominator
-(2.5x^2)*0.25x^2-(8.5)*0.25x^2+7*0.25x^2+1=0
Wy multiply elements
-(2.5x^2)*0.25x^2-(8.5)*0.25x^2+0x+1=0
We add all the numbers together, and all the variables
x-(2.5x^2)*0.25x^2-(8.5)*0.25x^2+1=0
We move all terms containing x to the left, all other terms to the right
x-(2.5x^2)*0.25x^2-(8.5)*0.25x^2=-1
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