Question

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

Answer 1

Answer:

10000 - 9801

=199 is correct number in box

Answer 2

Answer:

199

Step-by-step explanation:

100^2-99^2

since it is of the form a^2-b^2

it can be written as(100+99)(100-99)[since a^2-b^2=(a+b)(a-b)]

=(199)(1)

=199