English
Hindi
4-2.Quadratic Equations and Inequations
normal

$m$ ના કયા મૂલ્ય માટે સમીકરણ $y^2 + 2xy + 2x + my - 3$ ને બે સંમેય અવયવ ઉકેલી શકાય ?

A

$1$

B

$-2$

C

$2$

D

આપેલ પૈકી એકપણ નહિ.

Solution

અહીં , $a = 0, b = 1, c = -3$

$h = 1, g = 1, f = m/2$

તેથી $\Delta \, = \,{\rm{0}}\,\, \Rightarrow \,\left| {\,\begin{array}{*{20}{c}}
0&1&1\\
1&1&{m/2}\\
1&{m/2}&{ – 3}
\end{array}\,} \right|\, = \,0$

$⇒ (m/2 + 3) + (m/2 – 1) = 0 ⇒ m + 2 = 0 ⇒ m = -2$

Standard 11
Mathematics

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.