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-9x-7=8x^2-5x+9
We move all terms to the left:
-9x-7-(8x^2-5x+9)=0
We get rid of parentheses
-8x^2-9x+5x-9-7=0
We add all the numbers together, and all the variables
-8x^2-4x-16=0
a = -8; b = -4; c = -16;
Δ = b2-4ac
Δ = -42-4·(-8)·(-16)
Δ = -496
Delta is less than zero, so there is no solution for the equation
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