2r^2+12r+48=-4

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Solution for 2r^2+12r+48=-4 equation: 



2r^2+12r+48=-4

We move all terms to the left:

2r^2+12r+48-(-4)=0

We add all the numbers together, and all the variables

2r^2+12r+52=0

a = 2; b = 12; c = +52;
Δ = b2-4ac
Δ = 122-4·2·52
Δ = -272
Delta is less than zero, so there is no solution for the equation

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