Question

a number is made up of two numbers, whose sum is 28. number is two more than double the product of its digits. find the number. given answer

Answer 1

Answer:26

Step-by-step explanation:
Let the number be 10A+B

A+B=28

B=28-A   -----------------------------------1

10A+B=2(AxB)+2

10A+B=2AB+2  -------------------------------2

FROM 1 AND 2

10A+(28-A)=2A(28-A)+2
9A+28=56A-2$A^{2}$+2

2$A^{2}$-47A+26=0

SOLVE IT FURTHER USING QUADRATIC EQUATION.


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