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Q.

The condition for px2+qx+r=0 to be pure quadratic is

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a

q=0

b

p=0

c

r=0

d

p=q=0  

answer is A.

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Detailed Solution

It is given that we have to find the condition for px2+qx+r=0 is purely quadratic.
We know that the standard quadratic equation is written as ax² + bx + c = 0, where x is the variable, a and b are the coefficients, and c is the constant term.
A quadratic equation in which the term containing x raised to the power of 1 is not present is called a pure quadratic equation.
In other words, ax² + c = 0 is a pure quadratic equation. ∴q =0.
Hence, the correct option is 1.
 
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