6x-20-x2=55

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Solution for 6x-20-x2=55 equation: 



6x-20-x2=55

We move all terms to the left:

6x-20-x2-(55)=0

We add all the numbers together, and all the variables

-1x^2+6x-75=0

a = -1; b = 6; c = -75;
Δ = b2-4ac
Δ = 62-4·(-1)·(-75)
Δ = -264
Delta is less than zero, so there is no solution for the equation

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