Answers

2014-10-14T21:28:32+08:00
2014-10-14T21:29:54+08:00
Let 'x' be the number 
    'y' be the other number
x + y = 11   ---equation 1
xy = 30   ----equation 2
from equation 1
x + y = 11
x = 11 - y  ---equation 3
substitute equation 3 to equation 2
xy = 30
(11 - y)(y) = 30
11y - y² = 30
y² - 11y + 30 = 0
(y - 5)(y-6) = 0
y = 5 , y = 6
taking both values as values of x and y
therefore the two numbers are 5 and 6
0
nice...
20+20=40 5+5=10
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