What is expand (6+cos(t))^2 ?

The solution to expand (6+cos(t))^2 is 36+12cos(t)+cos^2(t)

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expand (6+cos(t))^2

expand

(6 + cos (t))^{2}

36 + 12 cos (t) + cos^{2} (t)

Solution steps

(6 + cos (t))^{2}

Apply Perfect Square Formula:

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

(6 + cos (t))^{2} = 6^{2} + 2 \cdot 6 cos (t) + cos^{2} (t)

= 6^{2} + 2 \cdot 6 cos (t) + cos^{2} (t)

Simplify

6^{2} + 2 \cdot 6 cos (t) + cos^{2} (t) : 36 + 12 cos (t) + cos^{2} (t)

= 36 + 12 cos (t) + cos^{2} (t)

6 (\frac{x + 1}{8} - \frac{2 x - 3}{16})

(x^{2} + 3 x + 1 \circ 3 x + 5) (3)

2 x (cos (y) - y sin (y))

- \frac{ln ( 2 )}{45 ( 1 - e ^{\frac{l n ( 2 )}{45}} )}

\frac{4 x}{( x + 2 ) ( x - 2 )}

What is expand (6+cos(t))^2 ?
The solution to expand (6+cos(t))^2 is 36+12cos(t)+cos^2(t)