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Zarrin [17]
3 years ago
15

Factorise fully 9x^2 - 16y^2

Mathematics
1 answer:
dsp733 years ago
4 0
Note: a² - b² = (a-b)(a+b)

9x² - 16y² = (3x)² - (4y)² = (3x - 4y)(3x + 4y)
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