What is expand (1-cos(6x))^2 ?

The solution to expand (1-cos(6x))^2 is 1-2cos(6x)+cos^2(6x)

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expand (1-cos(6x))^2

expand

(1 - cos (6 x))^{2}

1 - 2 cos (6 x) + cos^{2} (6 x)

Solution steps

(1 - cos (6 x))^{2}

Apply Perfect Square Formula:

(a - b)^{2} = a^{2} - 2 ab + b^{2}

(1 - cos (6 x))^{2} = 1^{2} - 2 \cdot 1 \cdot cos (6 x) + cos^{2} (6 x)

= 1^{2} - 2 \cdot 1 \cdot cos (6 x) + cos^{2} (6 x)

Simplify

1^{2} - 2 \cdot 1 \cdot cos (6 x) + cos^{2} (6 x) : 1 - 2 cos (6 x) + cos^{2} (6 x)

= 1 - 2 cos (6 x) + cos^{2} (6 x)

1 + \frac{20.05 ( s + 7.28 )}{( s ^{2} + 8 s + 15 ) ( s + 19.42 )}

\frac{n ( 3 n + 5 )}{4 ( n + 1 ) ( n + 2 )}

(x - sin (x)) (1 - cos (x))

\frac{( 2 + h ) ^{3}}{h}

x^{2 x + 1} (2 ln (x) + \frac{2 x + 1}{x})

What is expand (1-cos(6x))^2 ?
The solution to expand (1-cos(6x))^2 is 1-2cos(6x)+cos^2(6x)