Question

Tính nhanh

Answer 1

\(2,=99^3+3.99^2+3.99+1\\ =\left(99+1\right)^3\\ =100^3=1000000\)

Answer 2

\(99^3\) + 1 + 3.(\(99^2\) + 99)

= \(99^3+3.99^2.1+3.99.1^2+1^3\)

= \(\left(99+1\right)^3\)

= \(100^3\)

= \(1000000\)

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