7=-8u2

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Solution for 7=-8u2 equation: 



7=-8u^2

We move all terms to the left:

7-(-8u^2)=0

We get rid of parentheses

8u^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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