SOLUTION: Please show how to answer this (-x)^2 - 5x= and x= (-3)

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Question 602130: Please show how to answer this
(-x)^2 - 5x= and x= (-3)

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
(-x)^2 - 5x

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

(3)^2 - 5(-3)

9 - 5(-3)

9 + 15

24

This means that (-x)^2 - 5x = 24 when x = -3