-5x^2+20=100

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Solution for -5x^2+20=100 equation: 



-5x^2+20=100

We move all terms to the left:

-5x^2+20-(100)=0

We add all the numbers together, and all the variables

-5x^2-80=0

a = -5; b = 0; c = -80;
Δ = b2-4ac
Δ = 02-4·(-5)·(-80)
Δ = -1600
Delta is less than zero, so there is no solution for the equation

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