7x^2-7=168

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Solution for 7x^2-7=168 equation: 


Simplifying
7x2 + -7 = 168

Reorder the terms:
-7 + 7x2 = 168

Solving
-7 + 7x2 = 168

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 = 168 + 7

Combine like terms: -7 + 7 = 0
0 + 7x2 = 168 + 7
7x2 = 168 + 7

Combine like terms: 168 + 7 = 175
7x2 = 175

Divide each side by '7'.
x2 = 25

Simplifying
x2 = 25

Take the square root of each side:
x = {-5, 5}

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