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If a and b are roots of equation x^(2)-P...

If a and b are roots of equation `x^(2)-PX+Q=0`, find the value of `1/a+1/b`.

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The correct Answer is:
`p/q`
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FULL MARKS-BASIC ALGEBRA-Exercise-2.13
  1. If a and b are roots of equation x^(2)-PX+Q=0, find the value of 1/a+1...

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  2. If |x + 2| le 9 , then x belongs to

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  3. Given that x, y and b are real numbers x lt y, b gt 0, then

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  4. If (|x-2|)/(x - 2) ge 0, then x belongs to

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  5. The solution of 5x-1lt24 and 5x+1gt-24 is ……..

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  6. The solution set of the following inequality |x - 1| le |x - 3| is

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  7. The value of log(sqrt2)512 is …..

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  8. The value of log(3)""1/81 is …….

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  9. If log(sqrtx)0.25=4 then the value of x is ………

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  10. The value of "log"(a) b "log"(b)c "log"(c ) a is

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  11. If 3 is the logarthim of 343, then the base is ……

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  12. Find a so that the sum and product of the roots of the equation 2x^(2)...

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  13. If a and b are roots of the equation x^(2)-kx+16=0 and satisfy a^(2)+b...

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  14. The number of solutions of x^(2) + |x - 1| = 1 is

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  15. The equation whose roots are numerically equal but opposite in sign to...

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  16. If 8 and 2 are the roots of x^(2) + ax + c = 0 and 3,3 are the roots o...

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  17. If a and b are the real roots of the equation x^(2)-kx+c=0 , then the ...

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  18. If (kx)/((x + 2) (x - 1)) = (2)/(x + 2) + (1)/(x -1) , then the value ...

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  19. If (kx)/((x+2)(x-1))=(2(x-1)+1(x+2))/((x+2)(x-1)) =(3x)/(x+2)(x-1) i...

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  20. The number of roots of (x + 3)^(4) + (x + 5)^(4) = 16 is

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  21. The value of "log"(3)11."log"(11) 13."log"(13)15."log"(15)27."log"(27)...

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