Question

evaluate using suitable identity :(3.4)³+(6.6)³-10³

Answer 1

(3.4)³ + (6.6)³ - (10)³
= (3.4)³ + (6.6)³ + (-10)³

if you know,
(a + b + c) = 0
then, a³ + b³ + c³ = 3abc

here we see ,
3.4 + 6.6 - 10 = 0

hence, (3.4)³ + (6.6)³ + (-10)³ = 3(3.4)(6.6)(-10)
(3.4)³ + (6.6)³ - (10)³ = 673.2

hence, answer is 673.2

Answer 2

I hope it will help you Sushant. Best regards @ Mohit.