Question 759980
the tens place exceeds the unit digit by 5.
say the units place is x so the tens place is x+5
the product of the digit is 36 
so x(x+5)=36
or x^2+5x-36=0
or x^2+9x-4x-36=0
or x(x+9)-4(x+9)=0
or (x+9)(x-4)=0
or x=-9 or 4