Question

Which of the following are solutions to the following equation? 4x^2 – 100=0 Check all that apply. A. -10 B. 10 c.-5 D. 5

Answer 1

$\begin{gathered} 4x^2-100=0 \\ 4x^2=0+100 \\ x^2=\frac{100}{4} \\ x=\sqrt[]{25} \\ This\text{ equation has 2 solutions:} \\ x_1=5 \\ \text{and} \\ x_2=-5 \end{gathered}$