(2x + 3y) = 13

(2x + 3y)³ = 13³

(2x)³ + (3y)³ + 3 × 2x × 3y (2x + 3y) = 13³

Now solve further:

8x³ + 27y³ + 18xy (2x + 3y) = 2197

8x³ + 27y³ + 18 × 6 × 13 = 2197

8x³ + 27y³ + 1404 = 2197

8x³ + 27y³ = 2197 - 1404

=793

Verified answer

Answer:

Step-by-step explanation: