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How do I show the real roots in for this graph? http://d.pr/i/COS9

Mathematics
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be truthful to yourself.
|dw:1334914514106:dw| This is my drawing.
Real roots means x-axis intercepts

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Other answers:

So is it 2 and where line y= x+16 intercepts the x axis?
adnanchowdhury, bad drawing, it should only touch the x-axis
and yes, it is 2 and -16
Are you sure? because when x=0, y=16?
does not make a difference, you want y = 0
and y = 0. when x = -16
sorry, just read the question again, the roots are the solutions to the question, which means the intercepts between the 2 graphs: |dw:1334914789804:dw|
clearly one of the roots is at x = 0 and the only other root is where the line extends to meet the curve
okay, so there are 3 roots?
(x-2)^4 = x+16 so x^4 -8x^3+24x^2-32x+16 = x-16
16 cancels, and you can factor out x, so one solution is at x = 0
now, x^3 -8x^2+24x-32 = 0
this is a third order polynomial with one x-intercept, so the solution to this equation, and x = 0, are the only 2 roots
and so how do i show this on the graph?
|dw:1334915153788:dw|
like that :-)
oh i see. Thanks.

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