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90(2b-90)+3/2b+b(b+45)=450
We move all terms to the left:
90(2b-90)+3/2b+b(b+45)-(450)=0
Domain of the equation: 2b!=0We multiply parentheses
b!=0/2
b!=0
b∈R
b^2+180b+3/2b+45b-8100-450=0
We multiply all the terms by the denominator
b^2*2b+180b*2b+45b*2b-8100*2b-450*2b+3=0
Wy multiply elements
2b^3+360b^2+90b^2-16200b-900b+3=0
We do not support ebpression: b^3
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