Question

please give me the of this question​

Answer 1

Answer:

Step-by-step explanation:

998=1000-2

998³=(1000-2)³,which is in the form of (a-b) ³

(a-b) ³=a³-b³-3ab(a-b)

that implies, 1000³-2³-3*1000*2(1000-2)

=1000000000-8-6000(998)

=1000000000-5988000-8

=994011992

Therefore, 998³=994011992

2.

(105)^3 = (100+5)^3                                    (a+b)^3=a^3 + b^3 + 3 ab^2 + 3 a^2b

100^3+5^3+3 x 100^2 x 5+3 x 100 x 5^2

= 1000000+125+150000+7500

= 1150000+7625

= 157625

Answer 2

Answer:

Please see the above attachment......⬆⬆⬆

Step-by-step explanation:

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