Question

please tell fast as you can with step by step explanation​

Answer 1

Answer:

Hope you understand it .

Step-by-step explanation:

Here it is in the attachment

Answer 2

Step-by-step explanation:

1. FORMULA-
2. ${a}^{2} - {b }^{2} \: = (a+b).(a - b)$

Then

$100 {}^{2} - 99 {}^{2} = (100 + 99).(100 - 99)$

=199*1 =199

• $27 {}^{2} - 26 {}^{2} = (27 + 26).(27 - 26)$

=53.1=53

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