Question

Simplify using identities i) (6 − 7)(6 + 7)​

Answer 1

QUESTION:- Simplify using identities i) (6 − 7)(6 + 7)

ANSWER:- a²-b² = (a-b)(a+b)

$(6 - 7)(6 + 7) \\ \\ {(6)}^{2} - {(7)}^{2} \\ \\ 36 - 49 \\ \\ - 13 \\ \\ hope \: it \: helps \:$

Answer 2

Step-by-step explanation:

Using Identity,

$(a + b)(a - b) = a {}^{2} - b { }^{2}$

Solutions,

$(6 - 7)(6 + 7) \\ = 6 {}^{2} - 7 {}^{2} = 36 - 49$

2. Calculate the value

$36 - 49 \\ = - 13$