Question

using identities find (82)^2-(18(^2​

Answer 1

Step-by-step explanation:

$(82)^{2} - (18)^{2}$   (Using the identity $a^{2} - b^{2} = (a+b)(a-b)$)

= (82+18)(82-18)

= 100 × 64

= 6400 (Ans)