(x+1)² - (x-1)²=x+9
Matematika
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Pertanyaan
(x+1)² - (x-1)²=x+9
1 Jawaban
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1. Jawaban Machzen
(x + 1)² - (x -1)² = X + 9
x² + 2x + 1 + x² -2x + 1 = x + 9
x² + x ² + 2x -2x -x + 1 + 1 = 9
2x² -x + 2 = 9
2x² - x = 9 -7
2x² - x = 2