anonymous
  • anonymous
Factor the expression x^4+8x^2-20??
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
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.
katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
x^4+8x^2-20 ..?
anonymous
  • anonymous
Were doing some cubic stuff in class lol
anonymous
  • anonymous
its x^4+8x^2-20 @Algebraic!

Looking for something else?

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

More answers

anonymous
  • anonymous
substitute u =x^2
mathstudent55
  • mathstudent55
Start wit a substitution to make it simpler: Let u = x^2, then u^2 = x^4. Now re3place the x's with the u's: u^2 + 8u - 20 Can you factor that one?
anonymous
  • anonymous
@mathstudent55 Im not sure.... My teacher didnt really go over this so i have no idea. Would I pull out a 4?
anonymous
  • anonymous
u^2 + 8u - 20 is a quadratic... you've factored a lot of those by now I think....
anonymous
  • anonymous
what two number multiply to give -20 and add to give 8?
anonymous
  • anonymous
@Algebraic! 10 and -2
anonymous
  • anonymous
(u+10)(u-2) = (x^2 +10)(x^2 -2)
anonymous
  • anonymous
(x^2-2) is a difference of squares.. so you can factor that ...
anonymous
  • anonymous
@Algebraic! Okay so what would i do with the other equation?
anonymous
  • anonymous
(x^2+10) ? no real roots...

Looking for something else?

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