Question

Expand the following
A1-(103)²
A2-(1001)²
B1 - (98)²
B2 - (99)²
Kindly give answer by solving, I don't want directly ​

Answer 1

Step-by-step explanation:

= (98)^2

=(100-2)^2

= 100 (100-2)-2(100-2)

= 10000-200-200+4

= 9960+4

= 9964

Answer 2

These four questions are done using identities (a+b) ^2 = a^2 + b^2 + 2ab

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