42=1/2b^2+3b

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Solution for 42=1/2b^2+3b equation: 



42=1/2b^2+3b

We move all terms to the left:

42-(1/2b^2+3b)=0



Domain of the equation: 2b^2+3b)!=0

b∈R



We get rid of parentheses

-1/2b^2-3b+42=0

We multiply all the terms by the denominator


-3b*2b^2+42*2b^2-1=0

Wy multiply elements

-6b^3+84b^2-1=0

We do not support ebpression: b^3

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