Question

What are the solution(s) to the quadratic equation x2 – 25 = 0?

Answer 1

$x^2-25=0\ \ \ \ | add\ 25\ to\ each\ side\\\\ x^2=25\ \ \ \ | \sqrt{}\\\\ x=\sqrt{25}\\\\ x=5\ or\ x=-5$

Answer 2

$x^2-25=0\ \ \ \ \ \Leftrightarrow\ \ \ (x-5 )(x+5) =0 \ \ \Leftrightarrow\ \ \ x=5\ \ \ or\ \ \ x=-5$