SOLUTION: what multiplies to be -3 but adds to be -5
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Question 1128066: what multiplies to be -3 but adds to be -5
Found 2 solutions by Boreal, MathLover1:
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
xy=-3
x+y=-5
so y=-5-x
substitute
x(-5-x)=-3
-5x-x^2=-3
0=x^2+5x-3
x=(1/2)(-5+/- sqrt (37))
numerically, this is 0.54 for x and -5.54
y would be -5.54 and +0.54 respectively
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
let’s two numbers be and
and assuming , .
Two equations and two unknown variables.
from the second equation.
substituted into the first equation.
..........cannot be factored completely, so use quadratic formula and you will get
or
then, go to and find
or
solutions are: assuming
check:
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