Question

evaluate (9.8)^3 by sutable ident​

Answer 1

Answer:

• We can write (9.8) as (9.0) &(0.8)

so, (9.8)=(9.0)+(0.8)

• We can substitute this in identity VI and can conclude that...

→(9.0+0.8)³

=(9.0)³+3(9.0)²(0.8)+3(9.0)(0.8)²+(0.8)³

=729+3(81)(0.8)+3(9.0)(0.64)+0.512

=941.192//

hope it's helpful.....