SOLUTION: please help to solve this question 1.iam a 2 digit number below 50. the sum of my digits is 13.the product of my digits is 36.who iam i.

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Question 880381: please help to solve this question
1.iam a 2 digit number below 50. the sum of my digits is 13.the product of my digits is 36.who iam i.

Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
1.iam a 2 digit number below 50. the sum of my digits is 13.the product of my digits is 36.who iam i.
u=units digit
t=tens digit
..
u+t=13
t=13-u
ut=36
u(13-u)=36
13u-u^2=36
u^2-13u+36=0
(u-9)(u-4)=0
u=9
t=13-u=4
number=49
or
u=4
t=13-u=9
number=94>50 (reject)
I am the number 49