Question

(1 + m)² – (1 – m)² factorise ​

Answer 1

Answer:

4m

Step-by-step explanation:

In this question, we can use the identity a² - b².

a² - b² = (a + b)(a - b)

(1 + m)² – (1 – m)² = a² - b²

Comparing, a = 1 + m        AND        b = 1 - m

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

=> (2)(2m) => 4m