15=-5(x^2)

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Solution for 15=-5(x^2) equation: 



15=-5(x^2)

We move all terms to the left:

15-(-5(x^2))=0

We get rid of parentheses

5x^2+15=0

a = 5; b = 0; c = +15;
Δ = b2-4ac
Δ = 02-4·5·15
Δ = -300
Delta is less than zero, so there is no solution for the equation

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