Question

I will mark you as brainlist and also give thanks if you give correct answer to me. Please don't post irrlevalent answers.Please don't post such types of answers.please​

Answer 1

Answer:

We use the identity:

(a - b)² = a² + b² - 2ab

And here we go:

(100 - 1)² = (100)² + (1)² - 2(100)(1)

=10000 + 1 - 200

=9801

Therefore, we have evaluated 99² using identities.

Answer 2

Answer:

activity 2:

$\frac{1}{2} \times \frac{1}{2} = \frac{1}{4} \\ \frac{1}{4} \times \frac{1}{4} = \frac{1}{16} \\ \frac{1}{16} \times \frac{1}{2} = \frac{1}{32}$

do multiply boxes with arrows,

the final ans will be

$\frac{1}{32}$hope u understood:-)