Can you please help me with these 4 equations.  I've spent hours and can't solve them. Use factoring to solve the equations. x3 + 8x2 - 9x =0    My answer is (9, -1)  This answer is incorrect 12b3 -11b2  +2b = 0    My answer is (16/24, 6/24)  This answer is incorrect y4  - 25y2 + 144 = 0     x4 - 82x2 + 81 = 0

Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:Lynn Marecek, MaryAnne Anthony-Smith
Chapter7: Factoring
Section7.5: General Strategy For Factoring Polynomials
Problem 313E: The difference of squares y4625 can be factored as (y225)(y2+25) . But it is not completely...
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Can you please help me with these 4 equations.  I've spent hours and can't solve them.

Use factoring to solve the equations.

x+ 8x- 9x =0    My answer is (9, -1)  This answer is incorrect

12b3 -11b +2b = 0    My answer is (16/24, 6/24)  This answer is incorrect

y4  - 25y+ 144 = 0    

x- 82x2 + 81 = 0       

 

Expert Solution
Step 1

The given equation is

Algebra homework question answer, step 1, image 1

Step 2

Factorize the above equation and obtain the roots as shown below:

Algebra homework question answer, step 2, image 1

Step 3

Obtain the roots of the second equation as shown below:

Algebra homework question answer, step 3, image 1

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