3a^2-15a+21=0

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Solution for 3a^2-15a+21=0 equation: 



3a^2-15a+21=0

a = 3; b = -15; c = +21;
Δ = b2-4ac
Δ = -152-4·3·21
Δ = -27
Delta is less than zero, so there is no solution for the equation

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