Evaluate the following expression using the values given:

Find x3 - 2y2 - 3x3 + z4 if x = 3, y = 5, and z = -3.

-185

-77

-23

85

Question

Evaluate the following expression using the values given:

Find x3 - 2y2 - 3x3 + z4 if x = 3, y = 5, and z = -3.

-185

-77

-23

85

anonymous · Answer

Are the 3 after the x, 2 after y and 4 after z supposed to represent powers?

noahjohnson967 · Answer

yes sorry

noahjohnson967 · Answer

its the last problem on the last assignment i have to do today and im just stuck

anonymous · Answer

just plug 3 in for x, 5 in for y and -3 in for z then solve. x^3=3^3=27

noahjohnson967 · Answer

i keep getting answers that arent even an option

mathstudent55 · Answer

$x^3 - 2y^2 - 3x^3 + z^4$

Is this the correct expression?

noahjohnson967 · Answer

yes

mathstudent55 · Answer

The first step you can do is combine like terms.
The first term is x^3 and the third term is -3x^3.
Those terms are like terms, so they can be combined.
What is x^3 - 3x^3 = ?

mathstudent55 · Answer

Are you still there?