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avatar+2291 

The roots of a quadratic equation are 6 and 3/4. If one of the two factors of the equation is x-6, what is the second factor?

A. 3x-4

B. 3x+4

C. 4x-3

D. 4x+3

RainbowPanda  Oct 2, 2018
 #1
avatar+92506 
+2

If  b/a   is a root...then   ( ax  - b )  is a factor.....

 

To see this...set   

 

ax  - b  = 0   add b to both sides

 

ax  = b     ...divide both sides by a

 

x   = b / a

 

So...this means that  3/4 is a root   and  ( 4x - 3)  is a factor  ⇒  C

 

 

 

cool cool cool

CPhill  Oct 2, 2018
 #2
avatar+2291 
+1

Thank youuuu

RainbowPanda  Oct 2, 2018

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