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6.) Write the equation of a polynomial that has zeros of 1, 7 and –4 and a leading coefficient of 1.

 Feb 16, 2019
 #1
avatar+98061 
+2

Not too bad, GM

 

(x -1) ( x - 7) ( x + 4)           expand the first two terms

 

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

 

x(x^2 - 8x + 7)   + 4(x^2 - 8x + 7)

 

x^3 - 8x^2 + 7x  + 4x^2 - 32x + 28  =

 

x^3 - 4x^2 - 25x + 28

 

cool  cool  cool

 Feb 16, 2019

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