Question

Without actually finding the cubes find the value of (-23) 3

+(13) 3

+(10) 3​

Answer 1

Answer:

We know that,

If (a+b+c)=0, then a

3

+b

3

+c

3

=3abc

Here, 28+(−15)+(−13)=0

∴(28)

3

+(−15)

3

+(−13)

3

=3(28)(−15)(−13)=16380

Answer 2

Step-by-step explanation:

The coefficient of x² in the polynomial

7 + 4x - x² + x³ is

-1