Question

using suitable identities calculate value of (99)cube​

Answer 1

Answer:

970299

Step-by-step explanation:

(99)^3=(100-1)^3

(x-y)^3=x^3-3x^2y+3xy^2-y^3

(100-1)^3=100^3-3(100)^2(1)+3(100)(1)^2-1^3

=1000000-3(10000)(1)+3(100)(1)-1

=1000000-30000+300-1

=970299

Answer 2

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Answer:

970299

Step-by-step explanation:

=(100) cube-(1)cube-3(100)(1)(100-1)

=1000000-1-300(99)

=1000000-1-29700

=970299☺☺☺