Question

what multiplies to 1.25 and adds up to 3

Answer 1

Answer:

2.5

Step-by-step explanation:

l x+y=3

ll x*y=1.25

l x=3-y

ll (3-y)*y =1.25

ll -y^2+3y-1.25=0

ll y^2-3y+1.25=0

a=1

b= -3

c=1.25

y1, 2 =(3+/-sqrt(9-4*1.25))/2

y1, 2 = (3+/-2)/2

y1=1.25 =>x=3-2.5=0.5

y2=0.5=> x=3-0.5=2.5

the numbers: o.5, 2.5