Question

evaluate using suitable identities: a. 9999² b. 99²-11² don't spam​

Answer 1

a.) ➪ Calculate the value

99980001

b.) ➪Use;

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

$(99 - 11) \times (99 + 11)$

➪ Subtract the numbers

$88 \times (99 + 11)$

➪ Add the numbers

$88 \times 110$

➪Multiply the numbers

9680

Solved ✔︎