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Alina [70]
3 years ago
7

Factor completely u^2-16u+63

Mathematics
1 answer:
Slav-nsk [51]3 years ago
4 0
You could factor this in a few ways, but the easiest is trial and error. check out the products of 63 and see if you can find anything that adds up to -16:

±63, ±1, ±7, <span>±9... the last two there could work. you know that you'll need two negatives to equal a positive 63, and -7 + -9 = -16, so:
</span>
(y - 7)(x - 9) is your factorization.
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