A x+1 B xkurang 1 maka A×B
Matematika
fatimah310
Pertanyaan
A x+1 B xkurang 1 maka A×B
1 Jawaban
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1. Jawaban Eli3173
A = x + 1
B = x - 1
A x B = (x + 1)(x - 1)
= x² + x - x - 1
= x² - 1