A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Need Help
Given 21x^33x^2=0 , which values of x will satisfy the equation? (Hint: Factor the polynomial into two terms, and find the values of x that will make each term 0.)
A.
x = 0 and x = –7
B.
x = 0 and x = 7
C.
x=0 and x=1/7
D. x=0 and x=1/7
anonymous
 one year ago
Need Help Given 21x^33x^2=0 , which values of x will satisfy the equation? (Hint: Factor the polynomial into two terms, and find the values of x that will make each term 0.) A. x = 0 and x = –7 B. x = 0 and x = 7 C. x=0 and x=1/7 D. x=0 and x=1/7

This Question is Closed

ZeHanz
 one year ago
Best ResponseYou've already chosen the best response.0The two terms of this equation, \(21x^3\) and \(3x^2\), have common factors. If you factor each term first, you can see all the common factors: \(21x^3=3\cdot7\cdot x \cdot x\cdot x\) \(3x^2=3 \cdot x \cdot x\). You can factor out the common factors (which are 3, x and x, obviously). Now you have \(3x^2(7x1)=0\). The equation now consists of two FACTORS and not terms btw. So solve \(3x^2=0\) and \(7x1=0\) to find the right answer...
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.