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What two numbers multiply to get -12 but add to get -1?
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2 votes
What two numbers multiply to get -12 but add to get -1?

User Ballon
by
7.5k points

2 Answers

7 votes
xy = - 12
x + y = - 1

x = - 12/y
- 12/y + y = - 1
- 12 + y^2 = - y
y^2 + y - 12 = 0
( y - 3 ) ( y + 4 ) = 0
y = 3 , y = - 4

3x = - 12
x = - 4

y = 3
User WakeupMorning
by
9.1k points
5 votes
The answer is -4 and 3
User Ethan Hermsey
by
8.0k points
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