Question

use properties to evaluate d 9/16x4/21+-5/8+9/16+-3/14​

Answer 1

Answer:

1560

Step-by-step explanation:

13

3

+(−8)

3

+(−5)

3

We know that

a

3

+b

3

+c

3

−3abc=(a+b+c)(a

2

+b

2

+c

2

−ab−ac−bc)

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

a

3

+b

3

+c

3

=3abc

Here,

a=13

b=−8

c=−5

and a+b+c=13−8−5=0

Thus,

13

3

+(−8)

3

+(−5)

3

=3(13)(−8)(−5)

=1560