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-5x^2+10=30
We move all terms to the left:
-5x^2+10-(30)=0
We add all the numbers together, and all the variables
-5x^2-20=0
a = -5; b = 0; c = -20;
Δ = b2-4ac
Δ = 02-4·(-5)·(-20)
Δ = -400
Delta is less than zero, so there is no solution for the equation
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