Question

without actually calculating the cube find the value of expression (28)³ +(-15)³+(-13)³​

Answer 1

Answer:

if a + b + c = 0

then, a³ + b³ + c³ = 3abc

now,

a + c + b = 0

28 + (-15) + (-13)

28 - 15 - 13

28 - 28

0

a³ + b³ + c³ = 3abc

= 3 (28) (-15) (-13)

= 16380 Ans

Step-by-step explanation:

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Answer 2

let a= 28 , b= -15 , c= -13

we know that a + b + c =0

28-15-13=0

3 (28) (-15) (-13)

= 16380