How do I simplify an expression

Question

How do u simplify expressions

 

Answer 1

Combine like terms

 

5x + 3x => 8x

 

Eliminate common factors

 

10     5 x 2       5 x 2      5

--- = ------- = -------- = ---

 6      3 x 2       3 x 2      3

 

Substitute in known identities

 

5 + sin² x + cos²x = 5 + 1 = 6

 

Reduce, reuse, recycle