Question

Without calculating find the value of(30)^3+(-18)^3+(-12)^3

Answer 1

(30)³ + (-18)³ + (-12)³

(6×5)³ + (-3×6)³ + (-2×6)³

6³ { 5³ - 3³ - 2³}

6³ { 125 - 27 - 8}

6³ {90}

216 { 90}

$216 \times 90 \\ \\ 19440$

I hope this will help you

(-:

Answer 2

Heya ✋

Let see your answer !!!!!!

Let x = 30

y = -18

z = -12

x + y + z = 0

=> 30 + (-18) + (-12) = 0

=> 30 - 18 - 12 = 0

=> 12 - 12 = 0

=> 0 - 0

Therefore ,

3xyz = 3 × 30 × (-18) × (-12)

= 90 × 216

= 19,440






Thanks :)))))