x-4y^2-20y-21=0

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Solution for x-4y^2-20y-21=0 equation:


Simplifying
x + -4y2 + -20y + -21 = 0

Reorder the terms:
-21 + x + -20y + -4y2 = 0

Solving
-21 + x + -20y + -4y2 = 0

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + x + -20y + 21 + -4y2 = 0 + 21

Reorder the terms:
-21 + 21 + x + -20y + -4y2 = 0 + 21

Combine like terms: -21 + 21 = 0
0 + x + -20y + -4y2 = 0 + 21
x + -20y + -4y2 = 0 + 21

Combine like terms: 0 + 21 = 21
x + -20y + -4y2 = 21

Add '20y' to each side of the equation.
x + -20y + 20y + -4y2 = 21 + 20y

Combine like terms: -20y + 20y = 0
x + 0 + -4y2 = 21 + 20y
x + -4y2 = 21 + 20y

Add '4y2' to each side of the equation.
x + -4y2 + 4y2 = 21 + 20y + 4y2

Combine like terms: -4y2 + 4y2 = 0
x + 0 = 21 + 20y + 4y2
x = 21 + 20y + 4y2

Simplifying
x = 21 + 20y + 4y2

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