CBSE Class 10-Mathematics: Chapter –4 Quadratic Equations Part 21
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4 Mark Questions
Question 1:
Find the roots of the following Quadratic Equations by applying quadratic formula.
(i)
(ii)
(iii)
(iv)
Answer:
(i)
Comparing quadratic equation with general form , we get, and Putting these values in quadratic formula
(ii)
Comparing quadratic equation with the general form , we get and Putting these values in quadratic formula
(iii)
Comparing quadratic equation with the general form , we get a
Putting these values in quadratic formula
A quadratic equation has two roots. Here, both the roots are equal.
Therefore,
(iv)
Comparing quadratic equation with the general form , we get and Putting these values in quadratic formula
But square root of negative number is not defined.Therefore, Quadratic Equation has no solution.