11r^2+15=-2r^2

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Solution for 11r^2+15=-2r^2 equation: 



11r^2+15=-2r^2

We move all terms to the left:

11r^2+15-(-2r^2)=0

We get rid of parentheses

11r^2+2r^2+15=0

We add all the numbers together, and all the variables

13r^2+15=0

a = 13; b = 0; c = +15;
Δ = b2-4ac
Δ = 02-4·13·15
Δ = -780
Delta is less than zero, so there is no solution for the equation

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