7x^2+7=-21

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Solution for 7x^2+7=-21 equation:


Simplifying
7x2 + 7 = -21

Reorder the terms:
7 + 7x2 = -21

Solving
7 + 7x2 = -21

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 7x2 = -21 + -7

Combine like terms: 7 + -7 = 0
0 + 7x2 = -21 + -7
7x2 = -21 + -7

Combine like terms: -21 + -7 = -28
7x2 = -28

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

Simplifying
x2 = -4

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

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

The solution to this equation could not be determined.

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