Latest exam Aptitude Question SOLUTION: What is the value of b if 2x^2 + bx + 8 has a discriminant of -15 ? i said 7 but my teacher marked it wrong !!! I think I should have said -7 or +7 ,can someone please expain this

• Placement Papers
• /
• exam
• /
• Numerical Ability

exam Question Papers:

(#M40080208) EXAM Numerical Ability question Keep an EYE

What is the value of b if 2x^2 + bx + 8 has a discriminant of -15 ?
i said 7 but my teacher marked it wrong !!! I think I should have said -7 or +7 ,can someone please expain this to me ?

Asked In exam (9 years ago)

Unsolved

Is this Puzzle helpful?   (0)   (0) Submit Your Solution