Question
The coefficient of x in the equation x2 + px + q = 0 was taken as 17 in place of 13, its roots were found to be -2 and -15, the roots of the original equation are
Answer: Option B
:
B
Let the equation (inwritten form) bex2 + 17x + q = 0.
Roots are -2, -15.
So q = 30,
And correct equation isx2 + 13x + 30= 0.
Hence roots are -3, -10.
Was this answer helpful ?
:
B
Let the equation (inwritten form) bex2 + 17x + q = 0.
Roots are -2, -15.
So q = 30,
And correct equation isx2 + 13x + 30= 0.
Hence roots are -3, -10.
Was this answer helpful ?
More Questions on This Topic :
Question 2. If x2+2ax+10−3a>0 for all x ∈ R, then ....
Question 3. If x is real and k=x2−x+1x2+x+1, then ....
Question 9. The nature of roots of x2−3x+2=0 will be:....
Latest Videos
Latest Test Papers
Submit Solution