Use the square root method to
-$$25 x ^ { 2 } - 64 = 0$$
A) $x = \pm \frac { 5 } { 8 }$
B) $x = \frac { 8 } { 5 }$
C) $x = \pm \frac { 8 } { 5 }$
D) $x = \frac { \sqrt { 8 } } { 5 }$

Question

Quizplus · Accepted Answer

First, add 64 to both sides to get $25x^2 = 64$. Then, divide both sides by 25 to get $x^2 = \frac{64}{25}$. Taking the square root of both sides gives $x = \pm \frac{8}{5}$.

Use the Square Root Method to - 25x2−64=025 x ^ { 2 } - 64 = 025x2−64=0

Use the Square Root Method to
- $25 x ^ { 2 } - 64 = 0$