Two circles S1 and S2 are given by the following equation  S1:x2+y2-10x+4y-7=0 S2:x2+y2+14x-6y+9=0 show that s1 and s2 touch externally

Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:Lynn Marecek, MaryAnne Anthony-Smith
Chapter8: Rational Expressions And Equations
Section8.9: Use Direct And Inverse Variation
Problem 499E: If p varies directly as q and p=10 , when q=2 . find the equation that relates p and q.
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Two circles S1 and S2 are given by the following equation 

S1:x2+y2-10x+4y-7=0

S2:x2+y2+14x-6y+9=0

show that s1 and s2 touch externally

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