Question

Find cube of 99 using the expansion formula​

Answer 1

Answer:

(99)3 = (100 − 1)3. = (100)3 − (1)3 − 3(100) (1) (100 − 1) = 1000000 − 1 − 300(99) = 970299. (102)3 = (100 + 2)3. = (100)3 + (2)3 + 3(100) (2) (100 + 2) = 1000000 + 8 + 600 (102) = 1061208. (998)3= (1000 − 2)3. = (1000)3 − (2)3 − 3(1000) (2) (1000 − 2) = 99401199

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Answer 2

Answer:

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Step-by-step explanation:

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