-3=2x^2+7

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Solution for -3=2x^2+7 equation: 



-3=2x^2+7

We move all terms to the left:

-3-(2x^2+7)=0

We get rid of parentheses

-2x^2-7-3=0

We add all the numbers together, and all the variables

-2x^2-10=0

a = -2; b = 0; c = -10;
Δ = b2-4ac
Δ = 02-4·(-2)·(-10)
Δ = -80
Delta is less than zero, so there is no solution for the equation

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