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OpenStudy (nerdy_3000):
How do you solve this problem using the quadratic formula http://oi44.tinypic.com/sgl4eu.jpg
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OpenStudy (mertsj):
What is the equation?
OpenStudy (mertsj):
Oh...the asker is absent.
OpenStudy (mertsj):
Do you know the theorem: when two secants intersect outside the circle, the products of their segments are equal.
OpenStudy (nerdy_3000):
Sorry about that...
OpenStudy (nerdy_3000):
That's the formula
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OpenStudy (mertsj):
So using that theorem: 3x(x)=8(x+2) 3x^2=8x+16 3x^2-8x-16=0 a+3, b=-8, c = -16
OpenStudy (mertsj):
Plug those numbers into the quadratic formula.
OpenStudy (nerdy_3000):
ok
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