Chapter 14.2, Problem 2CYU

To determine

To add polynomial

Explanation of Solution

Given information:

Polynomial $(x^2-4x)+(x^2-5x)$

Opening brackets,

  $x^2-4x+x^2-5x$

Here, $x^2$ and $x^2$ is represented by blue tiles, $-5x$ and $-4x$ are represented by 5 and 4 red tiles respectively.

  

    $x^2$        $-4x$      $x^2$     $-5x$

Solving, $x^2$ and $x^2$ add, -4 $x$ and -5 $x$ add,resulting,

  

      2 $x^2$          - 9x

Result is $2x^2-9x$