Question

evaluate 100²-99²
for 8th students ​

Answer 1

Step-by-step explanation:

$using \\ ( {x}^{2} - {y}^{2} ) = (x + y)(x - y) \\ \\ = {100}^{2} - {99}^{2} \\ \\ = (100 + 99)(100 - 99) \\ \\ = 199 \times 1 \\ \\ =199$

Answer 2

Answer

=100 Square - 99 Square

=10000-9801

=199