Question

dos numeros que multiplicados den 5 y sumados den 11

Answer 1

Xy=5
X+y=11

X=11-y

Y(11-y)=5
11y-y2=5
-y2+11y-5=0

Y1=5
Y2=1/2

X1+Y1=11

X1=11-Y1
X1=11-5
X1=6

X2=11-Y2
X2=11-1/2
X2=21/2=10,5