Chapter 14.1, Problem 8CYU

To determine

To simplify polynomial

Explanation of Solution

Given information:

Polynomial $-2x^2+7+3x-x^2-5x$

Here, $-2x^2$ and $-x^2$ is represented by 3 red tiles, - 5x and $3x$ is represented by 5 red tiles and 3 green tiles respectively and $7$ is represented as yellow tile.

  

On solving, $-2x^2$ and $-x^2$ , $3x$ and $-5x$ subtracts,making,

  

Result is $-3x^2-2x+7$