a e b partes
a + b = 13
a = 13 - b
ab = 36
a = 36 / b
a = a
13 - b = 36 / b
13b - b² = 36
- b² + 13b - 36 = 0
b² - 13b + 36 = 0
b = 9
a = 36 / 9
a = 4
------------- > 4 cm e 9 cm
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a e b partes
a + b = 13
a = 13 - b
ab = 36
a = 36 / b
a = a
13 - b = 36 / b
13b - b² = 36
- b² + 13b - 36 = 0
b² - 13b + 36 = 0
b = 9
a = 36 / b
a = 36 / 9
a = 4
------------- > 4 cm e 9 cm