jika x=3-2√7 carilah X²
Matematika
rani976
Pertanyaan
jika x=3-2√7 carilah X²
1 Jawaban
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1. Jawaban BSunShine
x = 3 - 2√7
x² = ..... ?
Penyelesaian :
x² = (3 - 2√7)²
x² = (3 - 2√7) (3 - 2√7)
x² = 9 - 6√7 - 6√7 + 4√49
x² = 9 - 12√7 + 4.7
x² = 9 - 12√7 + 28
x² = 37 - 12√7