A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Factor completely 49x*2 − 81.
anonymous
 one year ago
Factor completely 49x*2 − 81.

This Question is Closed

pooja195
 one year ago
Best ResponseYou've already chosen the best response.3Diffrence of squares \[\huge~\rm~\sqrt{49x^2}\sqrt{81}\]

DanJS
 one year ago
Best ResponseYou've already chosen the best response.1Try , since both coefficients are squares, and a minus sign.....( ( a + b) * ( a  b)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@pooja195 that setup is much more easier.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0When you square root the numbers instead of trying to factor them. Some people don't think of square rooting the numbers.

pooja195
 one year ago
Best ResponseYou've already chosen the best response.3Right :) thanks ^^ @DanJS 's work is helpful too since it belongs in that form :)

DanJS
 one year ago
Best ResponseYou've already chosen the best response.1I think that is what it looks like, if you have perfect squares a and b \[a^2*x^2  b^2 = (a+b)*(ab\]

DanJS
 one year ago
Best ResponseYou've already chosen the best response.1distribute backwards and check, it works out both ways

pooja195
 one year ago
Best ResponseYou've already chosen the best response.3No rember the x's...u have it some what correct (7x+9) (7x9) We need a positive and a negative statement
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.