Question

Evaluate the following :
(3.29)³ + (6.71)³ 

Answer 1

(3.29)³ + (6.71)³ 
= (3.29 + 6.71)³ - 3(3.29) (6.71) (3.029 + 6.71)
= (10)³ - 3(3.29) (6.71) (10)
= 1000 - 30 (5 - 1.71) (5 + 1.71)
= 1000 - 30 (5)² - (1.71)²
= 1000 - 30 (25 - 2.9241)
= 1000 - 30 x 22.0759
= 1000 - 662.277
= 337.723.