A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 2 years ago
i have to solve this by factoring... 49=9x^2 ... can i put a sqr. root sign over both sides, get 7=9x, and then get x=7/9???
 2 years ago
i have to solve this by factoring... 49=9x^2 ... can i put a sqr. root sign over both sides, get 7=9x, and then get x=7/9???

This Question is Closed

barrycarter
 2 years ago
Best ResponseYou've already chosen the best response.0Well, that's not actually factoring, and you lose the answer x=7/9

sami21
 2 years ago
Best ResponseYou've already chosen the best response.0since it says solve by factoring i would say do nt take square root write as 9x^249=0 or can be written as \[\Large \implies (3x)^2(7)^2=0\] now use the formula \[\Large a^2b^2=(a+b)(ab)\] in the above we have a=3x ,b=7 just put that in the given formula does this help you ?

kmalone99
 2 years ago
Best ResponseYou've already chosen the best response.1yes you can square both sides 49=9x^2 \[\sqrt{49}=\sqrt{9x ^2{}}\] 7=3x divide by 3 so x=3/7 but its plus or minus

kmalone99
 2 years ago
Best ResponseYou've already chosen the best response.1however is does say fator 49=9x^2 bring 49 to other side of equal sgn 9x^249=0 (3x7)(3x+7)=0 solve for x 3x7=0 3x=7 divide by 3 x=7/3 and 3x+7=0 3x=7 x=7/3
Ask your own question
Ask a QuestionFind 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.