Question

Equate 999^3
plz fast

Answer 1

$( {999})^{3}$
we can write it as
$(1000 - 1) {}^{3}$
by using identities..(I.e)
$(a - b) ^{3}$
$a ^{3} - {b}^{3} - 3ab(a - b)$

${(1000 - 1)}^{3}$
${1000}^{3} - {1}^{3} - 3 \times 1000 \times \\ 1(1000 - 1)$
$1000000000 - 1 - 3000(1000 - 1)$
$1000000000 - 1 - 3000000 \\ + 3000$
$999999999 - 2997000 \\ 997002999$

Answer 2

999^3


=(1000-1)^3
=(1000^3) -(1)^3-3×1000×1 (1000-1)
=1000000000-1-3000 (1000-1)
=1000000000 -1-3000000+ 3000
=1000003000-3000001
=997002999
is a right answer.

hopes it help u. . . . . . . . . . . . . . . :)...... ::::::)))))