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The product of 3 rational numbers is 21. If one of those numbers is -3, find two possible factors that make the statement true.

User Ncubica
by
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1 Answer

3 votes

Answer:


-1,7 \ and \ 1,-7

Explanation:

let
x and
y be two other factors.


Given \ that -3* x* y=21\\\Rightarrow xy=(-21)/(3) \\xy=-7


7 is a prime number. Its factors can be
1 and
7 only.

But product is negative so one of the number must be negative.

Two cases possible
-1,7 and
1,-7.

User Kunif
by
8.3k points

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