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Mathematics 26 Online
OpenStudy (anonymous):

-18z^3 + ( -15z^3)

OpenStudy (anonymous):

SIMPLIFY

OpenStudy (anonymous):

Subtract like you normally would since the exponents are the same. For example, -3x^2 + (-2x^2)= -5x^2

OpenStudy (anonymous):

m. i don't get it,

OpenStudy (anonymous):

What is -18+(-15)?

OpenStudy (anonymous):

When you are adding a negative it is the same as subtracting. So, what is -18-15?

OpenStudy (anonymous):

-3?

OpenStudy (anonymous):

No, -18-15=-33, then since your question has z^3 in it, your answer is -33z^3

OpenStudy (anonymous):

Does that make sense? :)

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