Question

factorise (a-2) (a+2) +3 please answer I will mark you as brainliest​

Answer 1

Answer:

(a - 1)(a + 1)

Step-by-step explanation:

Given,

(a - 2)(a + 2) + 3

We know that,

(x + y)(x - y) = x^2 - y^2

On using this identity in the expression, we get,

=> a^2 - 4 + 3

=> a^2 - 1

This can be written as,

=> a^2 - (1)^2 (since 1^2 = 1)

On using the identity again, we get

=> (a - 1)(a + 1)

Hence,

(a-2)(a+2) +3 = (a - 1)(a + 1)