Equations Reducible to Quadratic Form


 
 
Concept Explanation
 

Equations Reducible to Quadratic Form

There are certain equations which are reducible to quadratic form.

Illustration:

Solve:;frac{1}{x-3}+frac{1}{x+5}= frac{1}{6}, ;Where (xneq 3, -5)

Solution:

frac{1}{x-3}-frac{1}{x+5}= frac{1}{6}

frac{x+5-x+3}{(x-3)(x+5)}= frac{1}{6}

frac{8}{(x-3)(x+5)}= frac{1}{6}

frac{8}{(x^2-3x+5x-15)}= frac{1}{6}

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Sample Questions
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Question : 1

The area of a rectangle is 168cm^2.  The length of the rectangle is 2 cm more than its breath. Which of the following quadratic equations represents this situation?

Right Option : B
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Question : 2

Find the quadratic equation for the following :

frac{1}{x}+frac{1}{(x-6)} = 4

Right Option : B
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Explanation
Question : 3

The sum of the ages of Vivek and his younger brother Amit is 47 years. The product of their ages in years is 550.  Express this in quadratic form.

Right Option : C
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Explanation
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