Choose the correct solution set. $5 y ^ { 2 } - 21 y + 4 = 0$
A) $\left\{ \frac { 1 } { 6 } , - 5 \right\}$
B) $\left\{ \frac { 1 } { 5 } , - 4 \right\}$
C) $\left\{ \frac { 1 } { 5 } , 4 \right\}$
D) $\left\{ - \frac { 1 } { 7 } , - 4 \right\}$
E) $\left\{ - \frac { 1 } { 5 } , - 4 \right\}$

Question

Quizplus · Accepted Answer

We can factor the quadratic as $(5y-1)(y-4)=0$, giving us the solutions $y=\frac{1}{5}$ and $y=4$. Only choice C has both of these solutions.

Choose the Correct Solution Set 5y2−21y+4=05 y ^ { 2 } - 21 y + 4 = 05y2−21y+4=0

Choose the Correct Solution Set $5 y ^ { 2 } - 21 y + 4 = 0$