What is expand (1+cos(u))^2 ?

The solution to expand (1+cos(u))^2 is 1+2cos(u)+cos^2(u)

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expand (1+cos(u))^2

expand

(1 + cos (u))^{2}

1 + 2 cos (u) + cos^{2} (u)

Solution steps

(1 + cos (u))^{2}

Apply Perfect Square Formula:

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

(1 + cos (u))^{2} = 1^{2} + 2 \cdot 1 \cdot cos (u) + cos^{2} (u)

= 1^{2} + 2 \cdot 1 \cdot cos (u) + cos^{2} (u)

Simplify

1^{2} + 2 \cdot 1 \cdot cos (u) + cos^{2} (u) : 1 + 2 cos (u) + cos^{2} (u)

= 1 + 2 cos (u) + cos^{2} (u)

ln (x) \cdot (x - ln (x))

(a a - b b) (a b + b b)

\frac{( x - 2 ) ^{2} ( x + 1 )}{( x - 5 )}

(x^{2} + \frac{1}{4}) (x^{2} - \frac{3}{4})

(2 cos (A) + 1) (2 cos (A) - 1) (2 cos (2 A) - 1)

What is expand (1+cos(u))^2 ?
The solution to expand (1+cos(u))^2 is 1+2cos(u)+cos^2(u)