X2-(x+1)2+21=0

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Solution for X2-(x+1)2+21=0 equation: 



X2-(X+1)2+21=0

We add all the numbers together, and all the variables

X^2-(X+1)2+21=0

We multiply parentheses

X^2-2X-2+21=0

We add all the numbers together, and all the variables

X^2-2X+19=0

a = 1; b = -2; c = +19;
Δ = b2-4ac
Δ = -22-4·1·19
Δ = -72
Delta is less than zero, so there is no solution for the equation

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