The example problem is this: Let P=(x,y) be a point on the graph y=x^2-10
I looked at the steps in my book and I know I should use the distance formula to start off:
d=sqrt x^2+(x^2-10)^2. But the step is what I am stuck on. The example problem goes from this step and skips over the work, to go all the way to d=sqrt x^4-19x^2+100
First of all: Where in the heck did the 19x^2 come from?????? And second, is there anyone who can show me the next few steps to the problem so I can solve it myself please???? I would really appreciate the help!!!!!!!!!
I looked at the steps in my book and I know I should use the distance formula to start off:
d=sqrt x^2+(x^2-10)^2. But the step is what I am stuck on. The example problem goes from this step and skips over the work, to go all the way to d=sqrt x^4-19x^2+100
First of all: Where in the heck did the 19x^2 come from?????? And second, is there anyone who can show me the next few steps to the problem so I can solve it myself please???? I would really appreciate the help!!!!!!!!!
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d=sqrt( x^2+(x^2-10)^2)
d=sqrt( x^2+x^4 -20x^2 + 100)
d=sqrt(x^4 -19x^2 + 100)
The next step is to choose a value for x and compute the distance to that point.
d=sqrt( x^2+x^4 -20x^2 + 100)
d=sqrt(x^4 -19x^2 + 100)
The next step is to choose a value for x and compute the distance to that point.
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which ones are the two points?