What is expand-cos((3x+6)^4) ?

The solution to expand-cos((3x+6)^4) is -cos(81x^4+648x^3+1944x^2+2592x+1296)

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expand-cos((3x+6)^4)

expand

- cos ((3 x + 6)^{4})

- cos (81 x^{4} + 648 x^{3} + 1944 x^{2} + 2592 x + 1296)

Solution steps

- cos ((3 x + 6)^{4})

(3 x + 6)^{4} = 81 x^{4} + 648 x^{3} + 1944 x^{2} + 2592 x + 1296

= - cos (81 x^{4} + 648 x^{3} + 1944 x^{2} + 2592 x + 1296)

\frac{5 37 ( e ^{12 π} - 1 )}{6}

(3 x - 3) (3 x + 8)

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

x (x - 2) (x + 2)

(x + \frac{1}{6} x^{3})^{2}

What is expand-cos((3x+6)^4) ?
The solution to expand-cos((3x+6)^4) is -cos(81x^4+648x^3+1944x^2+2592x+1296)