SOLUTION: 5a^2b-4a, when a=-2 and b=3

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Question 1085295: 5a^2b-4a, when a=-2 and b=3
Found 3 solutions by addingup, MathTherapy, jim_thompson5910:
Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
5*-2^2*3-4*-2 = -60+8 = -52

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

5a^2b-4a, when a=-2 and b=3
highlight_green%28matrix%281%2C3%2C+Correct%2C+%22answer%3A%22%2C+68%29%29

IGNORE anyone who says otherwise!!

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
The tutor @MathTherapy is correct. The answer is 68.

The tutor @addingup mistakenly computed 5*(-1)*(2)^2*3 to get -60 when instead should have done 5*(-2)^2*3 to get 60. Notice how the negative inside the parenthesis. We're squaring ALL of 'a' including the negative.