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What two numbers multiply to give you negative 12 but add up to give you 4?
Updated: 4/28/2022
Wiki User
∙ 12y agoBest Answer
16
Vern Kovacek
Lvl 10
∙ 3y agoThis answer is:
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Wiki User
∙ 12y ago6 and -2.
Simply set up a systems of equations.
a*b = -12
a + b = 4
According to the second equation, a can also equal 4 - b.
So substitute this into the first equation.
(4 - b) * b = -12
From here, solve for b.
-b(squared) + 4b + 12 = 0 and therefore b(squared) - 4b - 12 = 0.
From here it can simplify to
(b - 6)(b + 2) = 0.
and then solve for the b's and you will get that the answers are 6 and -2.
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