Question

What is wrong in it

Note:Please give explanation ​

Answer 1

Answer:

Step-by-step explanation:

dude 10^2-10^2 is simply 0

Answer 2

Consider the fourth step, where (10 - 10) is taken as common.

$\frac{(10+10)(10-10)}{10(10-10)} \\ \\ \frac{10+10}{10} \times \frac{10-10}{10-10}$

As 10 - 10 = 0, even the numerator and the denominator are same in the fraction at right, they can't be cancelled as it's actually 0 divided by 0, which is undefined. So how this can be cancelled?!

So the mistake is occurred here.

Thank you... Plz ask me if you have any doubt on my answer.

#adithyasajeevan