Question

Find the value of discriminant of $x^2+7x-1=0$

Answer 1

Given equation is $x^2+7x-1=0$

here $a=1,b=7$ and $c=-1$

Discriminant $\Delta =b^2-4ac$

$\Rightarrow \Delta =7^2-4\times 1\times -1$

$=49+4$

$=53$

$\therefore \Delta >0$