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28=2-6x^2
We move all terms to the left:
28-(2-6x^2)=0
We get rid of parentheses
6x^2-2+28=0
We add all the numbers together, and all the variables
6x^2+26=0
a = 6; b = 0; c = +26;
Δ = b2-4ac
Δ = 02-4·6·26
Δ = -624
Delta is less than zero, so there is no solution for the equation
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