Jawab:
Penjelasan dengan langkah-langkah:
soal1
3x² -6x + 4= 0 , akarnya a dan b
a + b = 6/3 = 2
a b = 4/3
nilai = ( a² + b²) / (2ab)
= { (a + b)² - 2ab } / 2ab
= { 2² - 2 (4/3) } / { 2 . 4/3 }
= ( 4 - 8/ 3 ) / ( 8/3)
= (12 - 8)/ (8)
= 4/8
= 1/2
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Jawab:
Penjelasan dengan langkah-langkah:
soal1
3x² -6x + 4= 0 , akarnya a dan b
a + b = 6/3 = 2
a b = 4/3
nilai = ( a² + b²) / (2ab)
= { (a + b)² - 2ab } / 2ab
= { 2² - 2 (4/3) } / { 2 . 4/3 }
= ( 4 - 8/ 3 ) / ( 8/3)
= (12 - 8)/ (8)
= 4/8
= 1/2