50=0.04x^2-x+80

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Solution for 50=0.04x^2-x+80 equation: 



50=0.04x^2-x+80

We move all terms to the left:

50-(0.04x^2-x+80)=0

We get rid of parentheses

-0.04x^2+x-80+50=0

We add all the numbers together, and all the variables

-0.04x^2+x-30=0

a = -0.04; b = 1; c = -30;
Δ = b2-4ac
Δ = 12-4·(-0.04)·(-30)
Δ = -3.8
Delta is less than zero, so there is no solution for the equation

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