Which polynomial represents the sum: #(8x^2+5x+3)+(-5x^6=2x^5-4x^2-2x)#?

1 Answer
Dec 26, 2016

I take it the #=# in the second parts was meant as a #+# (forgot the shift-button?)

Explanation:

First we lose the brackets (no sign change because of the #+# between them), then we order by power:

#=-5x^6+2x^5+8x^2-4x^2+5x-2x+3#

We may add like powers:

#=-5x^6+2x^5+(8-4)x^2+(5-2)x+3#

#=-5x^6+2x^5+4x^2+3x+3#