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Popular >

simplify (3cos(x))^2

Solution

simplify

(3 cos (x))^{2}

Solution

9 cos^{2} (x)

Solution steps

(3 cos (x))^{2}

Apply exponent rule:

(a \cdot b)^{n} = a^{n} b^{n}

(3 cos (x))^{2} = 3^{2} cos^{2} (x)

= 3^{2} cos^{2} (x)

3^{2} = 9

= 9 cos^{2} (x)

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Frequently Asked Questions (FAQ)

What is (3cos(x))^2 ?
The solution to (3cos(x))^2 is 9cos^2(x)