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Mtovar550
24.08.2019 •
Mathematics
If all of the diagonals are drawn from a vertex of a quadrilateral, how many triangles are formed?
a.1
b.2
c.3
d.4
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Ответ:
Ответ:
x^2 - 10x + 25 = 0
(x - 5)(x - 5) = 0
zeroes are x= 5 (multiplicity 2)