Question 202089
Question#1 
x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
a = _1_ b = _6_ c = _-55_ 

Question #2 

x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
(-b/a)= -_6_ / _1_ = -6

Question #3 
x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
root1 + root2 = 5 + -11 = _-6__ 

Question #4 

x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
The sum of the roots is the same as (Hint: use letters) 
= -_ba_ /__

Question #5 
x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
(c/a) = _-55_ /_1_ = -55
Question #6 
x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
root1 x root2 = 5 x (-11) = _-55__ 

Question #7 
x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
The product of the roots is the same as (Hint: use letters) 
= - __c_ /_a__ 

Question #8 
8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
Identify a, b, and c. (Hint: you may have to arrange the equation in the form ax2+ bx + c = 0 .) 
a =__8_ b = _-2__ c = _-1__ 
Question #9 
8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
(-b/a)= -__-2_ /_8__ = 1/4

Question #10 
8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
root1 + root2 =(1/2)+(-1/4)= __1/4--_
 
Question #11 

8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
The sum of the roots is the same as (Hint: use letters) 
= _-b/a___

Question #12 
8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
(c/a)= _-1___ /_8__ = -1/8

Question #13 
8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
root1 x root2 = (1/2)(-1/4) = _-1/8__ 

Question #14 
8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
The product of the roots is the same as (Hint: use letters) 
= _c__ /_a__

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Cheers,
Stan H.



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Textbook information not provided.What's this? 

Quadratic_Equations/202089 (2009-07-05 18:11:37): Can anyone help me with ANY of these? I don't understand how the roots come into play. The title of this section is Sum and Product of Roots. 
Question#1 
x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
a = __ b = __ c = __ 

Question #2 

x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
(-b/a)= -__ / __

Question #3 
x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
root1 + root2 = 5 + -11 = ___ 

Question #4 

x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
The sum of the roots is the same as (Hint: use letters) 
= -__ /__

Question #5 
x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
(c/a) = __ /__ 
Question #6 
x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
root1 x root2 = 5 x (-11) = ___ 
Question #7 
x2 + 6x -55 = 0 and root1 = 5, root2 = -11 
The product of the roots is the same as (Hint: use letters) 
= - ___ /___ 
Question #8 
8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
Identify a, b, and c. (Hint: you may have to arrange the equation in the form ax2+ bx + c = 0 .) 
a =___ b = ___ c = ___ 
Question #9 
8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
(-b/a)= -___ /___ 
Question #10 
8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
root1 + root2 =(1/2)+(-1/4)= ___ 
Question #11 

8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
The sum of the roots is the same as (Hint: use letters) 
= ____

Question #12 
8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
(c/a)= ____ /___ 
Question #13 
8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
root1 x root2 = (1/2)(-1/4) = ___ 

Question #14 
8x2 - 2x = 1 and root1= 1/2 root2= -1/4 
The product of the roots is the same as (Hint: use letters) 
= ___ /___