Apply the distributive property.

Apply the distributive property.

Apply the distributive property.

Combine the opposite terms in .

Reorder the factors in the terms and .

Subtract from .

Add and .

Simplify each term.

Multiply .

Raise to the power of .

Raise to the power of .

Use the power rule to combine exponents.

Add and .

Multiply by .

Apply pythagorean identity.

Simplify (sec(x)-1)(sec(x)+1)