6y² + 7y - 20 = 0
----------------------------- kedua ruas dibagi 6
y² + 7/6 y - 20/6 = 0
y² + 7/6 y = 20/6
y² + 7/6 y + (7/12)² = 20/6 + (7/12)²
(y + 7/12)² = 20/6 + 49/144
(y + 7/12)² = 480/144 + 49/144
(y + 7/12)² = 529/144
y + 7/12 = √529/144
y + 7/12 = ± 23/12
y + 7/12 = 23/12
y = 23/12 - 7/12
y = 16/12
y = 4/3
y + 7/12 = -23/12
y = -23/12 - 7/12
y = -30/12
y = -5/2
Jawaban:
6y²+7y-20=0
y + 7/12)² = 529/144
y = 23/12 - 23/12
y = -30/12 = -5/2
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6y² + 7y - 20 = 0
----------------------------- kedua ruas dibagi 6
y² + 7/6 y - 20/6 = 0
y² + 7/6 y = 20/6
y² + 7/6 y + (7/12)² = 20/6 + (7/12)²
(y + 7/12)² = 20/6 + 49/144
(y + 7/12)² = 480/144 + 49/144
(y + 7/12)² = 529/144
y + 7/12 = √529/144
y + 7/12 = ± 23/12
y + 7/12 = 23/12
y = 23/12 - 7/12
y = 16/12
y = 4/3
y + 7/12 = -23/12
y = -23/12 - 7/12
y = -30/12
y = -5/2
Jawaban:
6y²+7y-20=0
y² + 7/6 y - 20/6 = 0
y² + 7/6 y = 20/6
(y + 7/12)² = 20/6 + 49/144
y + 7/12)² = 529/144
y + 7/12 = √529/144
y + 7/12 = 23/12
y = 23/12 - 23/12
y = 16/12
y = 4/3
y + 7/12 = -23/12
y = -23/12 - 7/12
y = -30/12 = -5/2