Question

using the formula (a-b)whole square then( 101) square​

Answer 1

$= (101) {}^{2} \\ = (100 + 1) {}^{2} \\ = 10000 + 1 + 200 \\ = 10201$

Hope it helps...

Please give thanks if you find my answer helpful

Answer 2

Answer:

1429 ,I think

Step-by-step explanation:

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

[(101)^2= (102-1)^2]

(102-1)^2 = (102)^2 +(-1) -2(102)(-1)

= 1224 +1 +204

= 1429

Hope helps.

also the previous answer ( of nehal12382) is wrong as there is given in question to use ""(a - b)"" formula not (a+b)