AP EAMCET · Maths · Quadratic Equation
For what values of , the quadratic expression can be factorised as , where ?
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
Since, he quadratic expression x+ax+1991+1 can be factorised as x+bx+c, therefore x+ax+1991+1=x+bx+c This implies that x+ax+1991+1 has roots -b & -c i.e., integer roots. So, discriminant of x2+1991+ax+1991a+1=0must be perfect square. 1991+a2-41991a+1=m2…
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