Let $p,q\in \left\{ 1,2,3,4 \right\}$. The number of equation of the form ${ px }^{ 2 }+qx+1=0$ having real roots, is

5x²-7x-3=0 সমীকরণের মূল ɑ ও β

k এর কোন মানের জন্য (k-1)x² -(k+2)x+4 রাশিটি পুর্ণবর্গ হবে?

If $b^2-4ac\geq 0$, then the root of quadratic equation $ax^2+bx+c=0$ is

Let us consider a quadratic equation $x^2+\lambda x+\lambda +1.25=0$,

where $\lambda$ is a constant.

The quadratic equation ${ 2x }^{ 2 }-\sqrt { 5x } +1=0$ has