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-k2-(5k-2n)+7n 

k=-2 and n=-4

 Nov 9, 2016
edited by MEB17  Nov 9, 2016
edited by MEB17  Nov 9, 2016
 #1
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Plug in values for variables.

 

-(-2)^2-(5(-2)-2(-4))+7(-4)

 

A double negative is a positive.

 

2^2-(5(-2)-2(-4))+7(-4)

 

Work inside parentheses.  Multiply.

 

2^2-(-10-(-8))+7(-4)

 

Subtract inside parentheses.

 

2^2-(-2)+7(-4)

 

Solve exponent.

 

4-(-2)+7(-4)

 

Multiply.

 

4-(-2)+(-28)

 

Add and subtract from left to right.

 

6+(-28)

 

-22

 

Your answer is -22.  I hope this helps!!!

 

@-Happy7

 Nov 9, 2016

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