Question

| Expand
by
using
suitable
identity. 1. (97)^3 2.(999)^3​

Answer 1

Answer:

$({100 - 3)}^{3} \\ {100}^{3} - {3}^{3} - 3(100) {}^{2} (3) + 3(100)(3) {}^{2} \\ 1000000 - 27 - 90000 + 2700 \\ 1002700 - 90027 \\ 912673$

hope it helps you

${999}^{3} \\ {(1000 - 1)}^{3} \\ {1000}^{3} - {1}^{3} - 3 {(1000)}^{2} (1) + 3(1000) ({1})^{2} \\ 1000000000 - 1 - 3(1000000)(1) + 3000 \\ 999999999 - 3000000 + 3000 \\ 997002999$

hope it helps

thankyou

have a nice day