biancavil32 biancavil32

16-01-2020
Mathematics

contestada

What substitution should be used to rewrite 4x^4 -21x^2+20=0 as a quadratic equation

Respuesta :

MathPhys MathPhys

16-01-2020

Answer:

u = x²

Step-by-step explanation:

4x⁴ − 21x² + 20 = 0

4(x²)² − 21x² + 20 = 0

If we substitute u = x²:

4u² − 21u + 20 = 0

Answer Link

Otras preguntas

I need help with this question! Will mark brainliest :)

Please help, 20 points. (right answers only) In 2–3 complete sentences, thoroughly explain the protagonist's main motivation or goal in Condensed Milk by Varlam

write compare and contrast paragraph about 2 subjects

3. Explain the use of "knitting" in the following phrase: "The arm was saved; now the bones are knitting nicely..." (What does the term “knitting" mean in this

what do immigrants have to do when they first come to america

label the heart 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13.

Help Please this is hard

PLEASE HELP ME I NEED IT TO BRING MY GRADE UP

Gold, jewelry, antique furniture, and other belongings are known as what? Purchasing power Needs Assets Wants

Find the midpoint. Help pleaseeee