CBSE Class 10-Mathematics: Chapter – 4 Quadratic Equations Part 21 (For CBSE, ICSE, IAS, NET, NRA 2022)
Get unlimited access to the best preparation resource for CBSE : fully solved questions with step-by-step explanation- practice your way to success.
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.