SOLUTION: in a positive number of two digits, the tens place exceeds the unit digit by 5. if the product of the digit is 36 find the number.
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Question 759980: in a positive number of two digits, the tens place exceeds the unit digit by 5. if the product of the digit is 36 find the number. Answer by sachi(548) (Show Source):
You can put this solution on YOUR website! 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
