Dictionary

For those of us who missed out on our math dictionary I'll fill you in.
Well it's actually just the end of what we couldn't finish yesterday.

• Being able to find the root sum and root product of f(x)=2x^2-6x+7

A=2 Root sum= -b/a Root product= c/a
B=-6
C=7 -(-6)/2 = 3 7/2

• Find a quadratic function whose sum is -3 and whose product is 5/2
  
  Root sum= -b/a Root product= c/a
  -3/1 = -b/a 5/2= c/a
  
  -6/2 = -b/a both must have a common denominator 5/2= c/a
  

a=2 f(x)=2x^2+6x+5
b=6
c=5