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vredina [299]
3 years ago
8

Factor the expression 16a^2 -81

Mathematics
1 answer:
exis [7]3 years ago
5 0

According to short multiplication formula - different of squares:

a² − b² = (a − b)(a + b)

<h3>16a² - 81 = (4a)² - 9² = (4a - 9)(4a + 9)</h3>

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