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x^2-20x^2=25
We move all terms to the left:
x^2-20x^2-(25)=0
We add all the numbers together, and all the variables
-19x^2-25=0
a = -19; b = 0; c = -25;
Δ = b2-4ac
Δ = 02-4·(-19)·(-25)
Δ = -1900
Delta is less than zero, so there is no solution for the equation
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