Question

please answer my question​

Answer 1

question 1 )  : factorise (x + 1)² - (y - 1)²

answer : let , (x + 1) = a ; and (y - 1) = b

so , a² - b² = (a + b)(a - b)

put the value of 'a'and'b'

(x + 1 + y - 1)(x + 1 - y + 1)

(x + y)(x - y + 2)

Question 2 ) : use factor to find the value of   312² - 308²

Answer : 312² - 308²

(312 + 308)(312 - 308)

(620)(4) = 2480

Answer 2

Answer:

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