Question

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

x = 5 and x = –5
x = 25 and x = –25
x = 125 and x = –125
no real solution

Answer 1

hi

x²-25 = (x+5) ( x-5)

As a multiplication can only add up to zero if one of term is 0 ,

there is two solutions :

x+5 = 0

x = -5

and x-5 = 0

x = 5

So two solutions for x² -25 = 0 which are -5 and 5

Answer 2

X= 5 and it also equals -5