18. Please Solve. Thanks!!

Algebra
Tutor: None Selected Time limit: 1 Day

Sep 11th, 2015

Thank you for the opportunity to help you with your question!

a^2-b^2 = (a+b)(a-b)

4x^2 -25 =0

(2x)^2-5^2 =0

(2x-5) (2x+5)=0

2x-5=0 or 2x+5 =0

2x=5 or 2x=-5

x=5/2 or x=-5/2

x=2.5 or -2.5

Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 11th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Sep 11th, 2015
...
Sep 11th, 2015
Dec 8th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer