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4.10*10^-4=4x^2/((0.4-x)(0.2-x))
We move all terms to the left:
4.10*10^-4-(4x^2/((0.4-x)(0.2-x)))=0
Domain of the equation: ((0.4-x)(0.2-x)))!=0We add all the numbers together, and all the variables
x∈R
-(4x^2/((-1x+0.4)(-1x+0.2)))-4+4.10*10^=0
We add all the numbers together, and all the variables
-(4x^2/((-1x+0.4)(-1x+0.2)))=0
We multiply parentheses ..
-(4x^2/((+x^2-0.2x-0.4x+0.08)))=0
We multiply all the terms by the denominator
-(4x^2=0
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