Question

Evaluate the following by using Identify 3

(81)²-(19)²​

Answer 1

(81-19)(81+19)

(62)(100)
6200 hope it helps you plz mark as brilliant answer

Answer 2

${81}^{2} - {19}^{2} = (81 + 19)(81 - 19) \\ {a}^{2} - {b}^{2} = (a + b)(a - b) \\ = 100 \times 62 \\ = 6200$

So, using the identity 3,the answer is 6200.

Hope it helps

Pls mark my answer as the brainliest