What is the square root of 99980001?
Show answer & explanation
Correct answer: A
Explanation
Has been given :
number = 99980001
According to the formula:
(a − b)² = a² − 2ab + b²
(10000 − 1)²
= 10000² − 2×10000×1 + 1²
= 100000000 − 20000 + 1
= 99980001
Therefore
√99980001 = 10000 − 1
= 9999