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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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5 0
3 years ago
Read 2 more answers
80 POINTS
frez [133]

I GOT YOU

1. b

2. b

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6 0
3 years ago
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(−2k <br> 3<br> −7k <br> 2<br> +5k)+(6k <br> 2<br> +3k)=
shusha [124]

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