Question

Find the value of : (9.8)³ - (11.3)³ + (1.5)³​

Answer 1

As 9.8+[-11.3]+1.5 =0
Therefore required value is
3*9.8*-11.3*1.5 = -498.33

Answer 2

hey there,

let, a=9.8

b=-11.3

c=1.5

then, a+b+c=9.8+1.5-11.3 =0

And if a+b+c=0 , then a^3+b^3+c^3=3abc

therefore, 3*9.8*-11.3*1.5

=-498.33 is your answer

hope u have understood :-)