Find the value of k for which the quadratic equation has equal roots. - Sri Chaitanya Infinity Learn Best Online Courses for NCERT Solutions, CBSE, ICSE, JEE, NEET, Olympiad and Class 6 to 12

A
0
B
8
C
Both 1 and 2
D
Either 1 or 2

Solution:

The standard quadratic equation is ${"mathml":"<math class="image_resized" style="width:146px;height:20px"><span style="font-family:$ If the roots are real and equal then D=0
If the roots are real and unequal then D>0
If the roots are real and imaginary then D<0
By comparing the standard equation with given equation,
${"mathml":"<math class="image_resized" style="width:222px;height:17px"><span style="font-family:$ Therefore,
${"mathml":"<math class="image_resized" style="width:294px;height:176px"><span style="font-family:$

Find the value of k for which the quadratic equation ${"mathml":"<math class="image_resized" style="width:151px;height:19px"><span style="font-family:$ has equal roots.

Solution:

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