Find 3x² - y³ - y³ - z if x = 3, y = -2, and z = -5?

Solution:

3x² - y³ - y³ - z [Given]

x = 3, y = -2, and z = -5

Now substitute the values in the given linear equation

= 3 (3)² - (-2)³ - (-2)³ - (-5)

By further calculation

= 3 (9) - (-8) - (-8) + 5

So we get

= 27 + 8 + 8 + 5

= 48

Therefore, the value of 3x² - y³ - y³ - z is 48.

Find 3x² - y³ - y³ - z if x = 3, y = -2, and z = -5?

Summary:

3x² - y³ - y³ - z if x = 3, y = -2, and z = -5 is 48.