Question

17. Find the value of a for which the equation (a -12)x² + 2(a-12)x + 2 = 0
has equal roots.
[CBSE 2013]​

Answer 1

Refer The Attachment ⬆️

If we substitute x = 12 in the equation it will be a non Quadratic Equation as (12-12) becomes 0, and therefore the Quadratic Equation False.

So, The equal and real roots of the given Quadratic Equation is 14.

• $\Large{\pink{\bold{x = 14}}}$

$\Large{\tt{@MrMonarque}}$

Hope It Requires!!