66.7k views
2 votes
What are the 2 factors that multiply 15000 and adds up to 5

User Brasskazoo
by
7.2k points

2 Answers

3 votes
the answer is 125 and -120 gthe thing is 15000 is positive
6 votes
ok so there are no real solutions for xy=15000 and x+y=5
there are immaginary solutions though so

xy=15000
x+y=5


x+y=5
y=5-x

x(5-x)=15000
-x^2+5x=15000
0=x^2-5x+15000
quadriacic formula
if ax^2+bx+c=0, then
x=
\frac{-b+/- \sqrt{b^(2)-4ac} }{2a}

x^2-5x+15000
a=1
b=-5
c=15000
x=
\frac{-(-5)+/- \sqrt{(5)^(2)-4(1)(15000)} }{2(1)}
x=
(5+/- √(25-60000) )/(2)
x=
(5+/- √(-59975) )/(2)
x=
(5+/- 5i√(2399) )/(2)
so the numbers are

(5+ 5i√(2399) )/(2) and
(5- 5i√(2399) )/(2)




User Hovik Antanisyan
by
7.5k points