if one zero of the quadratic polynomial 2x^2 - 3x -p is 3, find its other zero. Also find the value of p
Answers
Answered by
6
p(3)=2(3)^2-3(3)-p=0
18-9-p=0
9-p=0
9=p
p=9
other zeroes,
=> 2x^2-6x+3x-9=0
2x(x-3)+3(x-3)=0
(2x+3)(x-3)=0
other zero,
2x+3=0
2x=-3
x=(-3)/2
18-9-p=0
9-p=0
9=p
p=9
other zeroes,
=> 2x^2-6x+3x-9=0
2x(x-3)+3(x-3)=0
(2x+3)(x-3)=0
other zero,
2x+3=0
2x=-3
x=(-3)/2
Similar questions