4x^2+12+9=8

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Solution for 4x^2+12+9=8 equation: 


Simplifying
4x2 + 12 + 9 = 8

Reorder the terms:
12 + 9 + 4x2 = 8

Combine like terms: 12 + 9 = 21
21 + 4x2 = 8

Solving
21 + 4x2 = 8

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 + -21 + 4x2 = 8 + -21

Combine like terms: 21 + -21 = 0
0 + 4x2 = 8 + -21
4x2 = 8 + -21

Combine like terms: 8 + -21 = -13
4x2 = -13

Divide each side by '4'.
x2 = -3.25

Simplifying
x2 = -3.25

Reorder the terms:
3.25 + x2 = -3.25 + 3.25

Combine like terms: -3.25 + 3.25 = 0.00
3.25 + x2 = 0.00

The solution to this equation could not be determined.

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