Answered

From personal advice to professional guidance, IDNLearn.com has the answers you seek. Ask any question and receive comprehensive, well-informed responses from our dedicated team of experts.

What numbers add up to -5 and multiply to get -90

Sagot :

AL2006idn
You don't say how many numbers you want to do that with.

If you want just two numbers, then they're  +7.3107  and  -12.3107 .
(Those are rounded, not exact.)

I took a quick look among the factors of 90, looking for sets of 3 numbers
that would do it, and I couldn't find any.
Calculistaidn
let
x-------> the first number
y-------> the second number

we know that

[tex]x+y=-5 \\ x=-5-y[/tex] equation 1

[tex]x*y=-90[/tex] equation 2

substitute the equation 1 in equation 2

[tex][-5-y]*y=-90 \\ -5y- y^{2} =-90 \\ y^{2} +5y-90=0[/tex]

using a graphical tool to resolve the second order equation
see the attached figure
the numbers are
-12.311
7.311

View image Calculista
We appreciate your participation in this forum. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. Find precise solutions at IDNLearn.com. Thank you for trusting us with your queries, and we hope to see you again.