x0=21x^2+69x+420

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Solution for x0=21x^2+69x+420 equation: 



x0=21x^2+69x+420

We move all terms to the left:

x0-(21x^2+69x+420)=0

We add all the numbers together, and all the variables

x-(21x^2+69x+420)=0

We get rid of parentheses

-21x^2+x-69x-420=0

We add all the numbers together, and all the variables

-21x^2-68x-420=0

a = -21; b = -68; c = -420;
Δ = b2-4ac
Δ = -682-4·(-21)·(-420)
Δ = -30656
Delta is less than zero, so there is no solution for the equation

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