Question

question 3 of 10
find the solutions to the equation below.
check all that apply.
x² - 25 = 0
a. x = -1
b. x = 1
c. x = -3
d. x = -5
e. x = 5
f. x = 3

Explanation:

Step1: Isolate the variable term

Add 25 to both sides of the equation $x^{2}-25 = 0$, we get $x^{2}=25$.

Step2: Solve for x

Take the square - root of both sides. Remember that if $x^{2}=a$ ($a\geq0$), then $x=\pm\sqrt{a}$. So $x = \pm\sqrt{25}$, which gives $x = 5$ or $x=-5$.

Answer:

D. $x = - 5$, E. $x = 5$