Question

please slove the Question​

Answer 1

Answer:

hey here is your solution

pls mark it as brainliest

I have solved only one as all sums follow same procedure

so rest you do by yourself and verify it by calculator

Step-by-step explanation:

$1. \\ so \: here \: (31) {}^{3} \\ (31) {}^{3} = (30 + 1) {}^{3} \\ so \: here \: (30 + 1) {}^{3} \: is \: in \: form \: (a + b) {}^{3} \\ we \: know \: that \\ (a + b) {}^{3} = a {}^{3} + b {}^{3} + 3ab(a + b)$

$thus \: then \\ (31) {}^{3} = (30) {}^{3} + 1 {}^{3} + 3 \times 1 \times 30(30 + 1) \\ = 27000 + 1 + (90 \times 31) \\ = 27001 + 2790 \\ = 29791 \\ hence \: (31) {}^{3} = 29791$

Answer 2

Answer:

HOPE IT HELPS YOU.

SO, PLEASE GIVE ME SOME THANKS AND MARK ME AS BRAINLIST PLEASE.