What is expand (-9sin(x)+9sin(9x))^2 ?

The solution to expand (-9sin(x)+9sin(9x))^2 is 81sin^2(x)-162sin(x)sin(9x)+81sin^2(9x)

Popular >

expand (-9sin(x)+9sin(9x))^2

expand

(- 9 sin (x) + 9 sin (9 x))^{2}

81 sin^{2} (x) - 162 sin (x) sin (9 x) + 81 sin^{2} (9 x)

Solution steps

(- 9 sin (x) + 9 sin (9 x))^{2}

Apply Perfect Square Formula:

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

(- 9 sin (x) + 9 sin (9 x))^{2} = (- 9 sin (x))^{2} + 2 (- 9 sin (x)) \cdot 9 sin (9 x) + (9 sin (9 x))^{2}

= (- 9 sin (x))^{2} + 2 (- 9 sin (x)) \cdot 9 sin (9 x) + (9 sin (9 x))^{2}

Simplify

(- 9 sin (x))^{2} + 2 (- 9 sin (x)) \cdot 9 sin (9 x) + (9 sin (9 x))^{2} : 81 sin^{2} (x) - 162 sin (x) sin (9 x) + 81 sin^{2} (9 x)

= 81 sin^{2} (x) - 162 sin (x) sin (9 x) + 81 sin^{2} (9 x)

\frac{1}{s ( 1 + e ^{- s} )}

(5 - 3 x i)^{2}

- \frac{300 ( - 3 x ^{2} - 25 )}{( x ^{2} - 25 ) ^{3}}

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

(x - 25) (x + 25)

What is expand (-9sin(x)+9sin(9x))^2 ?
The solution to expand (-9sin(x)+9sin(9x))^2 is 81sin^2(x)-162sin(x)sin(9x)+81sin^2(9x)