Question

D. Simplify/ हल करें
81 x 81 + 68 x 68 - 2 x 81 x 68​

Answer 1

Step-by-step explanation:

a=81

b=68

(a-b)²

(81-68)²

(13)²

=169

Answer 2

$\huge\mathcal{Heya!}$

The given question is :

81 × 81 + 68 × 68 - 2 × 81 × 68

Let's make it shorter

Then,

$({81})^{2} + (68 )^{2} - 2 \times 81 \times 68$

We can see that We have got the form of

a^2 + b^2 - 2ab = (a-b)^2

Let's consider 81 as a and 68 as b

Then,

$(81 - 68 )^{2}$

(13)^2

Required answer :

$\boxed{\bold{169}}}$

Glad to help yaa..!