Question

evaluate the following by using identities (999)3​

Answer 1

Answer:

997,002,999

Step-by-step explanation:

this is the answer of your question

Answer 2

Answer:

$\huge{question :} \red{(999)^3 = (1000−1)^3} \\ </p><p></p><p> => \:{(1000)^3 − (1)^3 − 3(1000)(1)(1000−1) } \\ </p><p></p><p> {∵(x−y)^3 = x^3 − y^3 − 3xy(x−y)} \\ </p><p></p><p>=> \red{1000000000−1−3000(999)} \\ = > \pink{997002999}.$

See in attachment.