90=0,3x^2+15x+800

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Solution for 90=0,3x^2+15x+800 equation: 



90=0.3x^2+15x+800

We move all terms to the left:

90-(0.3x^2+15x+800)=0

We get rid of parentheses

-0.3x^2-15x-800+90=0

We add all the numbers together, and all the variables

-0.3x^2-15x-710=0

a = -0.3; b = -15; c = -710;
Δ = b2-4ac
Δ = -152-4·(-0.3)·(-710)
Δ = -627
Delta is less than zero, so there is no solution for the equation

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