7cos^2(x)-7=

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Solution for 7cos^2(x)-7= equation:


Simplifying
7cos2(x) + -7 = 0

Multiply cos2 * x
7cos2x + -7 = 0

Reorder the terms:
-7 + 7cos2x = 0

Solving
-7 + 7cos2x = 0

Solving for variable 'c'.

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

Add '7' to each side of the equation.
-7 + 7 + 7cos2x = 0 + 7

Combine like terms: -7 + 7 = 0
0 + 7cos2x = 0 + 7
7cos2x = 0 + 7

Combine like terms: 0 + 7 = 7
7cos2x = 7

Divide each side by '7os2x'.
c = o-1s-2x-1

Simplifying
c = o-1s-2x-1

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