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5x^2=8x-13
We move all terms to the left:
5x^2-(8x-13)=0
We get rid of parentheses
5x^2-8x+13=0
a = 5; b = -8; c = +13;
Δ = b2-4ac
Δ = -82-4·5·13
Δ = -196
Delta is less than zero, so there is no solution for the equation
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