jawablah soal dibawah ini
Matematika
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Pertanyaan
jawablah soal dibawah ini
1 Jawaban
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1. Jawaban whongaliem
[tex] \left[\begin{array}{ccc}p\\q\\\end{array}\right] = \left[\begin{array}{ccc}x&y\\y&x\\\end{array}\right] \left[\begin{array}{ccc}1&\\- 1&\\\end{array}\right] [/tex]
[tex] \left[\begin{array}{ccc}p\\q\\\end{array}\right] = \left[\begin{array}{ccc}x - y\\y - x\\\end{array}\right] [/tex]
p = x - y ; q = y - x
p² + q² = (x - y)² + (y² - x)²
= x² - 2xy + y² + y² - 2xy + x²
= 2x² - 4xy + 2y²
= 2 (x² - 2xy + y²)
= 2 (x - y)² ...... jawaban : B