Question 1175604
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I will give you an idea "how to start"


<pre>
(a)  2*1.

     Substitute p= 2, q= 1 into the formula


        2*1 = 1 - 3*2 = 1 - 6 = -5.



(b)  Do (b) exactly in the same way.



(c)  Now, when you just know how to handle two-term aggregate,

     move forward and calculate (1*2) first.


     After that, make the last step.
</pre>

Having my instructions, you just know what to do and how move forward.


So, I hope you can complete the rest on your own.



If you have questions, let me know.