Question

Factorise: (x + 5) (x – 5)​

Answer 1

Answer:

$x^2-25$

Step by step :

Using property :

• $a^2-b^2=(a+b)(a-b)$

Here:

• ( x + 5 ) ( x - 5 )
• $a = x$
• $b=5$

Answer --- >

• $x^2 - 5^2$
• $x^2-25$

Answer 2

Answer:

(a+b)(a-b) = a²-b²

(x+5)(x-5) =x²-5²

=x²-25