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30+24r^2-10r^2=0
We add all the numbers together, and all the variables
14r^2+30=0
a = 14; b = 0; c = +30;
Δ = b2-4ac
Δ = 02-4·14·30
Δ = -1680
Delta is less than zero, so there is no solution for the equation
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