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Studentka2010 [4]
3 years ago
8

What is AB? I don't get this problem. Help please!

Mathematics
1 answer:
Alexxandr [17]3 years ago
6 0

AB = x

6^2 = x * (x+5)

36 = x^2 +5x

x^2 +5x - 36 = 0

(x-4) (x+9) = 0

x = 4, x = -9

 it can't be a negative so x = 4

 AB = 4 cm

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