Question

anyone pls tell ans 9th

Answer 1

Hi mate
here is your answer
if a+b+c=0
then a³+b³+c³=3abc
here 28+-15+-13=0
So 28³+-13³+-15³=3*28*15*13=16380
hope it helps :)

Answer 2

( 28 )^3 + (-15)^3 + ( -13 )^3

if a + b + c = 0



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



28 + (- 15 ) + (-13 )

= 28 - 28 = 0

then, a^3 + b^3 + c^3 = 3abc

so now


(28)^3 + ( - 15)^3 + (-13)^3



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



= 16380


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【 your answer : 16380 】
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