If the equations x2 + bx – 1 = 0 and x2 + x + b = 0 have a common root different from –1, then |b| is equal to :

Question:
If the equations $x^{2}+b x-1=0$ and $x^{2}+x+b=0$ have $a$ common root different from $-1$, then $|b|$ is equal to :

Correct Option: 3

JEE Main Previous Year 1 Question of JEE Main from Mathematics Complex Numbers and Quadratic Equations chapter.

JEE Main Previous Year Online April 9, 2016

Solution: