-x^2=50x+4200

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Solution for -x^2=50x+4200 equation: 



-x^2=50x+4200

We move all terms to the left:

-x^2-(50x+4200)=0

We add all the numbers together, and all the variables

-1x^2-(50x+4200)=0

We get rid of parentheses

-1x^2-50x-4200=0

a = -1; b = -50; c = -4200;
Δ = b2-4ac
Δ = -502-4·(-1)·(-4200)
Δ = -14300
Delta is less than zero, so there is no solution for the equation

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