Solution

expand

Solution

Solution steps
Expand
Rewrite using trig identities
Apply rule
Use the basic trigonometric identity:

Popular Examples

expand (x+2)/((2x+5)(x+3))expand expand (x^3+2)(sin(x)+x^3)expand expand (x)^3expand expand x(x'+y)expand simplify (x+2)(x-5)(x-3+sqrt(6))(x-3-sqrt(6))simplify

Frequently Asked Questions (FAQ)

  • What is expand-cos((n+1)*pi) ?

    The solution to expand-cos((n+1)*pi) is (-1)^n