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1-7x^2=3
We move all terms to the left:
1-7x^2-(3)=0
We add all the numbers together, and all the variables
-7x^2-2=0
a = -7; b = 0; c = -2;
Δ = b2-4ac
Δ = 02-4·(-7)·(-2)
Δ = -56
Delta is less than zero, so there is no solution for the equation
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