Question

Does anyone have the time to help me please.

Answer 1

x²- 6x = 72

Try x = 4,
4³ - 6(4) = 40 (smaller than 72)

Try x = 5,
5³ - 6(5) = 95 (bigger than 72)

Therefore, the answer has to be between 4 and 5.

Try x = 4.5
(4.5)³ - 6(4.5) = 64 (smaller than 72)

Try x = 4.7
(4.7)³ - 6(4.7) = 75.62


----------------------------------------------
Answer: The value of x is 4.7
----------------------------------------------