4b^2+5b=-7

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Solution for 4b^2+5b=-7 equation: 



4b^2+5b=-7

We move all terms to the left:

4b^2+5b-(-7)=0

We add all the numbers together, and all the variables

4b^2+5b+7=0

a = 4; b = 5; c = +7;
Δ = b2-4ac
Δ = 52-4·4·7
Δ = -87
Delta is less than zero, so there is no solution for the equation

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