X^2-5x=-21

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Solution for X^2-5x=-21 equation: 



X^2-5X=-21

We move all terms to the left:

X^2-5X-(-21)=0

We add all the numbers together, and all the variables

X^2-5X+21=0

a = 1; b = -5; c = +21;
Δ = b2-4ac
Δ = -52-4·1·21
Δ = -59
Delta is less than zero, so there is no solution for the equation

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