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Verified answer
Mapel : MatematikaBab : Teorema Pythagoras
(a + 4)² + (3a + 2)² = (3a + 4)²
(a + 4)(a + 4) + (3a + 2)(3a + 2) = (3a + 4)(3a + 4)
a² + 4a + 4a + 16 + 9a² + 6a + 6a + 4 = 9a² + 12a + 12a + 16
10a² + 20a + 20 = 9a² + 24a + 16
10a² - 9a² + 20a - 24a + 20 - 16 = 0
a² - 4a + 4 = 0
(a - 2)(a - 2) = 0
a = 2
Jadi, nilai a = 2