Jawabanmu

Jawaban paling cerdas!
2014-05-14T15:38:06+07:00
Y = 6x³ - 2x² + 7x + 8
m1 = 18x² - 4x +7

y = 21x + 4
m2 = 21
18x² - 4x + 7 = 21
18x² - 4x - 14 = 0
9x² - 2x - 7 = 0
(9x + 7)(x + 1) = 0
x = -7/9 ⇒ y = 21x + 4 ⇔ y = -147/9 + 36/9 = -111/9 jadi titiknya (-7/9 . -111/9)
x = -1 ⇒ y = 21x + 4 ⇔ y = -21 + 4 = -17 jadi titiknya (-1,-17)
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