4ab-3bc ; a=-5 b=-8 and c=2

Question

mathmale · Answer

B:  What are the instructions for this problem?  It's good practice to include the instructions as well as the symbolism.

mathmale · Answer

Think of 4ab-3bc in this way:  4(  a  )(  b  ) - 3(  b  )(  c  ).
Now just replace a with -5, b with -8 and c with 2.  Multiply each of the two terms first.  Then subtract the second term from the first.

anonymous · Answer

Find the value of each expression for the given values

mathmale · Answer

Thanks.  Know what to do next?  Here's how to get started:

4(a)(b) = 4(-5)(-8) = ?
3(b)(c) = 3   ???
Simplify the two expressions above.
Then subtract the second from the first.

anonymous · Answer

Ok

aliyahrenee · Answer

I think the answer is 208.

mathmale · Answer

4ab - 3bc => 4(-5)(-8) - 3(-8)(2)
or                    160 + 480 = 208

Aliyahh:  How about doing both of us a favor and checking these my result along with yours?

aliyahrenee · Answer

yeah sure....okay.