Jika (a + b) : (a - b) = 7 : 5, maka (a² - b²) : (a²+b²) =.... Brp y kira2 tolong dng jwbnya pake cara ya
Matematika
Echak994
Pertanyaan
Jika (a + b) : (a - b) = 7 : 5, maka
(a² - b²) : (a²+b²) =.... Brp y kira2 tolong dng jwbnya pake cara ya
(a² - b²) : (a²+b²) =.... Brp y kira2 tolong dng jwbnya pake cara ya
1 Jawaban
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1. Jawaban threeletters
A + b = 7
a - b = 5
------------ +
2a = 12
a = 6
a - b = 5
6 - b = 5
b = 6 - 5 = 1
(a² - b²) : (a²+ b²)
(6² - 1²) : (6² + 1²)
35 : 37