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3x-2x(2)=7
We move all terms to the left:
3x-2x(2)-(7)=0
We add all the numbers together, and all the variables
-2x^2+3x-7=0
a = -2; b = 3; c = -7;
Δ = b2-4ac
Δ = 32-4·(-2)·(-7)
Δ = -47
Delta is less than zero, so there is no solution for the equation
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