The roots of equation  $7x^2\ +\ x-1$  are

If -5 is root of quadratic equation  $2x^2+px-15=0$  then the value of p is

One year ago, a man was 8 times as old as his son. Now his age is equal to the square of his son age. Their present ages are..

 Which of the following are the roots of equation  $x^2-9x+20=0$  

ax + b = 0 is general form of

The roots of the quadratic equation are real and same if