Question

Write down the correct number in the box
1. 100²-99²=
​

Answer 1

Answer:

the correct answer is :-

100² - 99² = 199

Answer 2

Answer:

$199$

Step-by-step explanation:

Using identity

${a}^{2} - {b }^{2} = (a + b)(a - b)$

=(100-99)(100+99)

=1*199

=199