15=x^2-6x+78

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Solution for 15=x^2-6x+78 equation: 



15=x^2-6x+78

We move all terms to the left:

15-(x^2-6x+78)=0

We get rid of parentheses

-x^2+6x-78+15=0

We add all the numbers together, and all the variables

-1x^2+6x-63=0

a = -1; b = 6; c = -63;
Δ = b2-4ac
Δ = 62-4·(-1)·(-63)
Δ = -216
Delta is less than zero, so there is no solution for the equation

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