-4x^2-28=0

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Solution for -4x^2-28=0 equation:


Simplifying
-4x2 + -28 = 0

Reorder the terms:
-28 + -4x2 = 0

Solving
-28 + -4x2 = 0

Solving for variable 'x'.

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

Add '28' to each side of the equation.
-28 + 28 + -4x2 = 0 + 28

Combine like terms: -28 + 28 = 0
0 + -4x2 = 0 + 28
-4x2 = 0 + 28

Combine like terms: 0 + 28 = 28
-4x2 = 28

Divide each side by '-4'.
x2 = -7

Simplifying
x2 = -7

Reorder the terms:
7 + x2 = -7 + 7

Combine like terms: -7 + 7 = 0
7 + x2 = 0

The solution to this equation could not be determined.

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