Question

if x = 2y plus 6. find the value of x cube - 8y cube - 36xy - 216​

Answer 1

Answer:

X=2y+6

Step-by-step explanation:

x³-8y³-36xy-216

(2y+6)³ -8y³- 36×2y+6×y- 216

8y+216-8y³-36×2y+6×y-216

8y×2y+6y+216-216-36-8y³

64y³+0-36-8y³

64y³-8y³-36

56y³-36

HOPE IT HELPS