+0  
 
0
186
2
avatar+771 

Find g(-3) when \(g(w)=-2w^5+8w^3‚Äč-25w+4\) using two different algebraic strategies from this lesson.

(I'm assuming that when it says two different algebraic strategies from this lesson, it means either long division, synthetic division, and the remainder theorem, because that's what I learned today.)

AdamTaurus  Oct 31, 2017
 #1
avatar+87639 
+1

 

Substitution

 

-2(-3)^5  + 8(-3)^3 - 25(-3) + 4  =  349

 

 

Synthetic Division

 

- 3   [   -2    0        8         0        -25         4  ]

                   6     -18      30        -90      345

          ______________________________

           -2    6      -10     30        -115     349

 

 

cool cool cool

CPhill  Oct 31, 2017
 #2
avatar+771 
+1

Thanks CPhill!

AdamTaurus  Oct 31, 2017

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