Open study

is now brainly

With Brainly you can:

  • Get homework help from millions of students and moderators
  • Learn how to solve problems with step-by-step explanations
  • Share your knowledge and earn points by helping other students
  • Learn anywhere, anytime with the Brainly app!

A community for students.

Factor 2x4 - 20x2 - 78. 2(x2- 3)(x2- 13) ***** 2(x2+ 3)(x2- 13) 2(x2- 3)(x2+ 13) I think is right ****

Mathematics
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Join Brainly to access

this expert answer

SEE EXPERT ANSWER

To see the expert answer you'll need to create a free account at Brainly

I would like you to please first try and check your answer before I try the problem. You are going to do this by using the FOIL method.
I did that's y I asked if its right

Not the answer you are looking for?

Search for more explanations.

Ask your own question

Other answers:

alrighty good, I'm working on it right now
okay lol
ok so only one of your answers is correct. let's go through the process together.
First factor out the 2 to get 2(x^4-10x^2-39) Replace any x^2 value with the variable a, so x^4 becomes a^2 because x^2 squared is x^4. You just do this to take the place of any x^2 s to make it easier, if that makes sense. So 2(a^2-10a-39). Then you can do regular factoring. 3 and -13 multiply to become -39, and 3-13=10. So The equation would become \[2(a+13)(a-3)\] Then change the a's back into x^2. So the answer is \[2(x ^{2}+3)(x ^{2}-13)\] So the answer is the second one.
So the first thing that we want to do is pull out any like terms. What does each term in the expression have in common?
x2
okay I need help again
ok, does the term (-78) contain an \[x ^{2}\]
idk
You can check your work by multiplying the factors back together using either the box method or FOIL. \[2(x ^{4}-13x ^{2}+3x ^{2}-39)\]Combine like terms to get \[2(x ^{4}-10x ^{2}-39)\]Then distribute the 2 \[2x ^{4}-20x ^{2}-78\]You know your answer is correct if it is the same as the original equation.
will u help me in another problem @rosedewittbukater
let's try a different approach. can you divide -78 by x^2 without leaving a remainder?
yes
Sure
okay I posted it already
ok so what is -78 divided by x^2 ?
Where did you post it
is it -39
on open questions
-39 is -78 divided by only 2 but think about the other terms listed do they also divide by 2?
idk
She's trying to ask what number or value can be divided out of every single part of the equation. There's no x^2 in 78 so the only common number that all of the numbers can be divided by is 2.
let's try a slightly simplified example if you have the equation: \[2x+2\] What number is common to both terms?

Not the answer you are looking for?

Search for more explanations.

Ask your own question