4X^2+8x=21

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Solution for 4X^2+8x=21 equation:


Simplifying
4X2 + 8x = 21

Solving
4X2 + 8x = 21

Solving for variable 'X'.

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

Add '-8x' to each side of the equation.
4X2 + 8x + -8x = 21 + -8x

Combine like terms: 8x + -8x = 0
4X2 + 0 = 21 + -8x
4X2 = 21 + -8x

Divide each side by '4'.
X2 = 5.25 + -2x

Simplifying
X2 = 5.25 + -2x

Reorder the terms:
-5.25 + X2 + 2x = 5.25 + -2x + -5.25 + 2x

Reorder the terms:
-5.25 + X2 + 2x = 5.25 + -5.25 + -2x + 2x

Combine like terms: 5.25 + -5.25 = 0.00
-5.25 + X2 + 2x = 0.00 + -2x + 2x
-5.25 + X2 + 2x = -2x + 2x

Combine like terms: -2x + 2x = 0
-5.25 + X2 + 2x = 0

The solution to this equation could not be determined.

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