2ײ-×-1=0 tolong bantu
Matematika
Faisal1933rbs
Pertanyaan
2ײ-×-1=0 tolong bantu
1 Jawaban
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1. Jawaban Ghazwul
2x² - x - 1 = 0
2x² - 2x + x - 1 = 0
(2x² - 2x) + (x - 1) = 0
2x (x - 1) + 1 (x - 1) = 0
(2x + 1) (x - 1) = 0
2x = -1 atau x = 1
x = -1/2