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X^2-9X^2=7
We move all terms to the left:
X^2-9X^2-(7)=0
We add all the numbers together, and all the variables
-8X^2-7=0
a = -8; b = 0; c = -7;
Δ = b2-4ac
Δ = 02-4·(-8)·(-7)
Δ = -224
Delta is less than zero, so there is no solution for the equation
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