Answers Common Core Algebra II A-ICWriting Polynomial Functions from Complex Roots

Quadratic in Form Polynomials Answers

3 verified answers2 views

Which equation is quadratic in form?

2(x + 5)3 + 8x + 5 + 6 = 0

x6 + 6x4 + 8 = 0

7x6 + 36x3 + 5 = 0

4x9 + 20x3 + 25 = 0

What are the solutions of the quadratic equation (x – 8)2 – 13(x – 8) + 30 = 0? Use u substitution to solve.

x = –11 and x = –18

x = –2 and x = 5

x = 2 and x = –5

x = 11 and x = 18

Which quadratic equation is equivalent to (x + 2)2 + 5(x + 2) – 6 = 0?

(u + 2)2 + 5(u + 2) – 6 = 0 where u = (x – 2)

u2 + 4 + 5u – 6 = 0 where u = (x – 2)

u2 + 5u – 6 = 0 where u = (x + 2)

u2 + u – 6 = 0 where u = (x + 2)

Did you find these answers helpful?

More from this Course