SOLUTION: 3p(q-r^2) p=-1 q=-3 r=5 What is the solution? I got -66, but in class the teacher says its 84.

Question 681894: 3p(q-r^2) p=-1
q=-3
r=5
What is the solution? I got -66, but in class the teacher says its 84.
3(-1)(-3-5^2)
-3(-3+25)
-3(22)
-66

How do you get 84?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Your work

3(-1)(-3-5^2)
-3(-3+25) <<<<------ It should be -25 since -5^2 = -25
-3(22)
-66

=======================================================

Corrected work

3p(q-r^2)

3(-1)(-3-5^2)

3(-1)(-3-25)

3(-1)(-28)

-3(-28)

84

So 3p(q-r^2) = 84 when p = -1, q = -3 and r = 5
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