Question

Which expression is a factor of 9r^2 - 4r + 1?

F 3r-1
G r- 1
H- 9r- 1
J- There are no real factors.

Answer 1

Answer: there are no real factors

Explanation:

Answer 2

9514 1404 393

Answer:

J- There are no real factors.

Explanation:

For quadratic ax^2 +bx +c, the discriminant is ...

d = b^2 -4ac

d = (-4)^2 -4(9)(1) = 16 -36 = -20

When the discriminant is negative, there are no real factors.