Question

Evaluate the following by using identities (98)^2 and (101)^2​

Answer 1

98² = (100 - 2)²

[(a-b)² = a² - 2ab + b²]

here a= 100 and b=2

(100 - 2)² = 100² - 2 × 100 × 2 + 2²

(100 - 2)²  = 10000 - 400 + 4

(100 - 2)²  = 9604

101² = (100 + 1)²

[(a+b)² = a² + 2ab + b²]

here a = 100 and b = 1

(100 + 1)² = 100² + 2 × 100 × 1 + 1²

(100 + 1)² = 10000 + 200 + 1

(100 + 1)² = 10201

Answer 2

Answer:

9064 and 10201

Step-by-step explanation: