Question

QUIZ(12/100)

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4x² - 6x = 4

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nilai x = ..​

Answer 1

x = –½   atau   x = 2 Pembahasan4x² – 6x = 4⇒ 4x² – 6x – 4 = 0⇒ 2(2x² – 3x – 2) = 0⇒ 2x² – 3x – 2 = 0⇒ 2x² – 4x + x – 2 = 0⇒ 2x(x – 2) + (x – 2) = 0⇒ (2x + 1)(x – 2) = 0⇒ 2x + 1 = 0  atau  x – 2 = 0⇒ 2x = –1   atau   x = 2⇒ x = –½   atau   x = 2