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A two digit number such tha the product ...

A two digit number such tha the product of the digits is 20. If 9 is subtracted from the number, the digits interchange their places. Find the number.

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KUMAR PRAKASHAN-QUADRATIC EQUATIONS-Test Your Skills
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  10. Solve the following for x : x^(2)+(1)/(x^(2))=(82)/(9) (2) x^(2)+(1...

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  19. Determine the positive values of k for which the equation x^(2)+kx+64=...

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