Question

Find the value of the following without actually calculating. Also mention the identity used.
i) (-11)3 + ( 6)3 + (5)3
ii) 98x102
PLEASE ANSWER FAST!

Answer 1

Answer:

hey mate

(1) (-11)³ + (6)³ + (5)³

-11 +6+5= -11+11=0

so we can use a³+b³+c³= 3abc

3×-11×6×5= -990

(-11)³ + (6)³ + (5)³ = -990

(2) 98 × 102

( 100-2) (100+2) = (100)²-(2)²

= 10000-4= 9996

hope it will help you