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

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

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

expand

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

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

Solution steps

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

Apply Perfect Square Formula:

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

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

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

Simplify

cos^{2} (x) + 2 cos (x) sec (x) + sec^{2} (x) : cos^{2} (x) + sec^{2} (x) + 2

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

\frac{( k + 1 ) ^{2} ( k + 2 ) ^{2}}{4}

\frac{6}{2} (1 + 2)

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

lo g_{10} (\frac{y z ^{3}}{x ^{5}})

δ (x - y)

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