+0  
 
+1
281
2
avatar+1442 

Find the coefficient of x when (7+8x)-3(2+6x+2x^2)+9(1+3x+4x^2+12x^3)-9(7-x^2-8x^3+13x^4) is simplified.

 

Thank you!

AnonymousConfusedGuy  Nov 30, 2017
 #1
avatar+90053 
+2

(7+8x)-3(2+6x+2x^2)+9(1+3x+4x^2+12x^3)-9(7-x^2-8x^3+13x^4)

 

8x  -  18x +  27x   =

 

17x

 

So.....the coefficient is  17 

 

 

cool cool cool

CPhill  Nov 30, 2017
 #2
avatar+1442 
+2

Right on dude!

AnonymousConfusedGuy  Nov 30, 2017

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