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8a^2-7=-52
We move all terms to the left:
8a^2-7-(-52)=0
We add all the numbers together, and all the variables
8a^2+45=0
a = 8; b = 0; c = +45;
Δ = b2-4ac
Δ = 02-4·8·45
Δ = -1440
Delta is less than zero, so there is no solution for the equation
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