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6(x^2+4)=9
We move all terms to the left:
6(x^2+4)-(9)=0
We multiply parentheses
6x^2+24-9=0
We add all the numbers together, and all the variables
6x^2+15=0
a = 6; b = 0; c = +15;
Δ = b2-4ac
Δ = 02-4·6·15
Δ = -360
Delta is less than zero, so there is no solution for the equation
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