0=-0.4x^2+4x-15

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Solution for 0=-0.4x^2+4x-15 equation: 



0=-0.4x^2+4x-15

We move all terms to the left:

0-(-0.4x^2+4x-15)=0

We add all the numbers together, and all the variables

-(-0.4x^2+4x-15)=0

We get rid of parentheses

0.4x^2-4x+15=0

a = 0.4; b = -4; c = +15;
Δ = b2-4ac
Δ = -42-4·0.4·15
Δ = -8
Delta is less than zero, so there is no solution for the equation

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