X^2-21x-11=0

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Solution for X^2-21x-11=0 equation: 


Simplifying
X2 + -21x + -11 = 0

Reorder the terms:
-11 + X2 + -21x = 0

Solving
-11 + X2 + -21x = 0

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '11' to each side of the equation.
-11 + X2 + 11 + -21x = 0 + 11

Reorder the terms:
-11 + 11 + X2 + -21x = 0 + 11

Combine like terms: -11 + 11 = 0
0 + X2 + -21x = 0 + 11
X2 + -21x = 0 + 11

Combine like terms: 0 + 11 = 11
X2 + -21x = 11

Add '21x' to each side of the equation.
X2 + -21x + 21x = 11 + 21x

Combine like terms: -21x + 21x = 0
X2 + 0 = 11 + 21x
X2 = 11 + 21x

Simplifying
X2 = 11 + 21x

Reorder the terms:
-11 + X2 + -21x = 11 + 21x + -11 + -21x

Reorder the terms:
-11 + X2 + -21x = 11 + -11 + 21x + -21x

Combine like terms: 11 + -11 = 0
-11 + X2 + -21x = 0 + 21x + -21x
-11 + X2 + -21x = 21x + -21x

Combine like terms: 21x + -21x = 0
-11 + X2 + -21x = 0

The solution to this equation could not be determined.

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