Choose the correct solution set. $4 x ^ { 2 } + 25 x - 21 = 0$
A) $\left\{ 7 , \frac { 3 } { 4 } \right\}$
B) $\left\{ - \frac { 7 } { 3 } , - \frac { 3 } { 4 } \right\}$
C) $\left\{ - 7 , \frac { 3 } { 4 } \right\}$
D) $\left\{ 7 , \frac { 1 } { 4 } \right\}$
E) $\left\{ 7 , - \frac { 3 } { 4 } \right\}$

Question

Quizplus · Accepted Answer

We can solve this equation using either factoring or the quadratic formula. Factoring the equation, we get $(4x-3)(x+7)=0.$ Thus, the solutions are $x=-\frac{7}{1}$ and $x=\frac{3}{4},$ which correspond to choice C.

Choose the Correct Solution Set 4x2+25x−21=04 x ^ { 2 } + 25 x - 21 = 04x2+25x−21=0

Choose the Correct Solution Set $4 x ^ { 2 } + 25 x - 21 = 0$