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pychu [463]
3 years ago
8

The product of a number and 9 less than the number is 90. Find the number.

Mathematics
1 answer:
Goryan [66]3 years ago
7 0

Let's say this number is a:
a*(a-9) = 90
a^2-9a-90 = 0
(a-15)(a+6) = 0
a = 15 or a = -6
Therefor a. would be the correct answer :)
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Answer:

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Those values are:

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3 0
3 years ago
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Step-by-step explanation:

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<em />

4 0
3 years ago
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