Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Quadratic Equations Common Roots
If one root of the equation x2 + ax - 20 = 0 is 5, while the equation x2 + ax + b = 0 has equal roots, then the value of b is
1
\(\rm 1\over4\)
2
\(\rm 1\over2\)
3
\(\rm 1\over3\)
4
More than one of the above
5
None of the above