Factor completely. If the polynomial cannot be factored, write ʺprime.ʺ
-$$9 x ^ { 2 } + 34 x - 8$$
A) $( 9 x - 2 ) ( x - 4 )$
B) $( 9 x - 10 ) ( 9 x - 2 )$
C) $( 9 x - 2 ) ( x + 4 )$
D) $( 2 - 9 x ) ( 9 x - 2 )$

Question

Quizplus · Accepted Answer

We can use factoring by grouping or the quadratic formula to confirm that the roots are not rational. Therefore, the polynomial cannot be factored with integers and is prime. Among the answer choices, only option C is a possible factorization, but it does not check out when multiplied out.

Factor Completely 9x2+34x−89 x ^ { 2 } + 34 x - 89x2+34x−8

Factor Completely $9 x ^ { 2 } + 34 x - 8$