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Geometry: Find x AB*AC=AD*AE

Mathematics
Tutor: None Selected Time limit: 0 Hours

Mar 16th, 2015

15*(15+17) = x(x+14)

480 = x^2 + 14x

0 = x^2 + 14 x - 480

x = 16

x = -30

Valid answer : x = 16

Mar 16th, 2015

Can you explain to me how you got the answer?

 

Mar 16th, 2015

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