Find p so that quad equation px (x- 3)+9=0 has equal roots
Answers
Answered by
3
px(x-3)+9=0
px²-3px+9=0
where,
a=p
b=-3p
c=9
it has equal roots
so, D=0
by quadratic formula,
D=b²-4ac
0=(-3p)²-4(p)(9)
0=9p²-36p
0=9(p²-4p)
0=p²-4p
4p=p²
4=p²/p
4=p
p=4
the value of p is 4
hope this answer will help you.
px²-3px+9=0
where,
a=p
b=-3p
c=9
it has equal roots
so, D=0
by quadratic formula,
D=b²-4ac
0=(-3p)²-4(p)(9)
0=9p²-36p
0=9(p²-4p)
0=p²-4p
4p=p²
4=p²/p
4=p
p=4
the value of p is 4
hope this answer will help you.
Similar questions