SOLUTION: Please help.I need to know if I did this right?Thank you!
2.If x = 1 and x = -8, then form a quadratic equation.
(x-1)(x-(-8))=0
(x-1)=0
(x-(-8))=0
x-1=0
x=-1
(x
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Question 165018This question is from textbook elementary and intermediate algebra
: Please help.I need to know if I did this right?Thank you!
2.If x = 1 and x = -8, then form a quadratic equation.
(x-1)(x-(-8))=0
(x-1)=0
(x-(-8))=0
x-1=0
x=-1
(x-(-8)=0
(x+8)=0
x+0
x=-8
x=-8,-1
This question is from textbook elementary and intermediate algebra
Answer by MRperkins(300) (Show Source): You can put this solution on YOUR website!
Not quite.
You are trying to get this into a quadratic equation which is:
.
you have the right idea with the first part of your problem.
You wrote:
(x-1)(x-(-8))=0
However, you need to multiply these and get a function of x in which
So, FOIL and get
Combine like terms
So:
a=1
b=7
c=(-8)
Now plug these numbers into the quadratic equation
.
:
.
.
comments appreciated
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