0=-2z^2+9z-15

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Solution for 0=-2z^2+9z-15 equation: 



0=-2z^2+9z-15

We move all terms to the left:

0-(-2z^2+9z-15)=0

We add all the numbers together, and all the variables

-(-2z^2+9z-15)=0

We get rid of parentheses

2z^2-9z+15=0

a = 2; b = -9; c = +15;
Δ = b2-4ac
Δ = -92-4·2·15
Δ = -39
Delta is less than zero, so there is no solution for the equation

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