Respuesta :
If you would like to find the solutions to the quadratic equation x^2 - 25 = 0, you can do this using the following steps:
x^2 - 25 = 0
(x + 5) * (x - 5) = 0
x^2 - 5x + 5x - 25 = 0
1. x = - 5
2. x = 5
The correct result would be x = 5 and x = –5.
x^2 - 25 = 0
(x + 5) * (x - 5) = 0
x^2 - 5x + 5x - 25 = 0
1. x = - 5
2. x = 5
The correct result would be x = 5 and x = –5.
For this case we have the following polynomial:
[tex] x ^ 2 - 25 = 0
[/tex]
We can solve the polynomial by factoring.
We have then:
[tex] (x + 5) (x-5) = 0
[/tex]
From here, we clear the solutions of the equation.
Solution 1:
[tex] x + 5 = 0
x = -5 [/tex]
Solution 2:
[tex] x-5 = 0
x = 5 [/tex]
Answer:
the solutions to the quadratic equation x ^ 2 - 25 = 0 are:
x = 5 and x = -5