What is expand (sin(x)+cos(2x))^2 ?

The solution to expand (sin(x)+cos(2x))^2 is sin^2(x)+2cos(2x)sin(x)+cos^2(2x)

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expand (sin(x)+cos(2x))^2

expand

(sin (x) + cos (2 x))^{2}

sin^{2} (x) + 2 cos (2 x) sin (x) + cos^{2} (2 x)

Solution steps

(sin (x) + cos (2 x))^{2}

Apply Perfect Square Formula:

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

(sin (x) + cos (2 x))^{2} = sin^{2} (x) + 2 sin (x) cos (2 x) + cos^{2} (2 x)

= sin^{2} (x) + 2 sin (x) cos (2 x) + cos^{2} (2 x)

= sin^{2} (x) + 2 cos (2 x) sin (x) + cos^{2} (2 x)

4 (\frac{3}{4} x + y = - 3)

\frac{34 - 17 s}{( 2 s - 1 ) ( s ^{2} - 2 s + 5 )}

\frac{4 π ( h ^{2} + 8 h + 8 ) ^{2}}{3 h ^{2}}

lo g_{8} (x y)

(x - 8) (x + 8)

What is expand (sin(x)+cos(2x))^2 ?
The solution to expand (sin(x)+cos(2x))^2 is sin^2(x)+2cos(2x)sin(x)+cos^2(2x)