121=49-4x^2

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Solution for 121=49-4x^2 equation:


Simplifying
121 = 49 + -4x2

Solving
121 = 49 + -4x2

Solving for variable 'x'.

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

Add '4x2' to each side of the equation.
121 + 4x2 = 49 + -4x2 + 4x2

Combine like terms: -4x2 + 4x2 = 0
121 + 4x2 = 49 + 0
121 + 4x2 = 49

Add '-121' to each side of the equation.
121 + -121 + 4x2 = 49 + -121

Combine like terms: 121 + -121 = 0
0 + 4x2 = 49 + -121
4x2 = 49 + -121

Combine like terms: 49 + -121 = -72
4x2 = -72

Divide each side by '4'.
x2 = -18

Simplifying
x2 = -18

Reorder the terms:
18 + x2 = -18 + 18

Combine like terms: -18 + 18 = 0
18 + x2 = 0

The solution to this equation could not be determined.

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