Question

Simplify: (x^2+3x-4)+(2x^3 -2x+5)

Answer 1

Start moving the variables

x 2 + 3 x − 4 + 2 x 3 − 2 x + 5
= x 2 + 3 x + − 4 + 2 x 3 + − 2 x + 5

Then combine like terms:

= x 2 + 3 x + − 4 + 2 x 3 + − 2 x + 5
= ( 2 x 3 ) + ( x 2 ) + ( 3 x + − 2 x ) + ( − 4 + 5 )
= 2 x 3 + x 2 + x + 1

Answer: = 2 x 3 + x 2 + x + 1