+0

# Algebra 2

0
161
1

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers.

Place the indicated product in the proper location on the grid. Write your answer in descending powers of x.

(x2 + 2x - 1)(x2 + 2x + 5)

Guest Nov 13, 2017
Sort:

#1
+85757
+1

(x^2 + 2x - 1)(x^2 + 2x + 5) =

x^2 * x^2    + x^2 *2x +  5x^2   =  x^4 + 2x^3 + 5x^2    (1)

2x*x^2 + 2x*2x + 10x  =  2x^3 + 4x^2 + 10x   (2)

-1*x^2 - 1*2x - 1*5  =   -x^2 - 2x - 5   (3)

Combining (1) (2) (3)  we have

x^4 + 4x^3  + 8x^2 + 8x - 5

CPhill  Nov 13, 2017

### 13 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details