Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Adorkable

  • 3 years ago

(-3x^2)(4x^7) And explain why please. So i know I have to add the exponents and multiply the coefficients. But when you multiply 2 x's they become squared right?

  • This Question is Closed
  1. Adorkable
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    -12x^9?

  2. polpak
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    If you had 2 x's multiplied together it would be x squared. But you already have an x squared (2 x's) if you multiply those two by 7 more, you'll have 9 x's multiplied together (x^9)

  3. Adorkable
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Ohh tyvm!

  4. polpak
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Then it's just a matter of multiplying the non-variable part (-3)(4) = -12

  5. Adorkable
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Ohhh thanks!

  6. Wallach
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    you can think of it as if the x is x^1 then if you've got x*x it's like you have x^1*x^1 there for what you get is x^2

  7. Dalvoron
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    When you multiply 2 \(x\)s together, you're adding the exponents just like normal. The variable \(x\) is the same as \(x^1\). So when you multiply \(x\) by \(x\), you're really multiplying \(x^1\) by \(x^1\). When you add the exponents, you get \(x^2\).

  8. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find 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
  • 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.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.