1.

if one zero of the quadratic polynomial 2x^2 - 3x -p is 3, find its other zero. Also find the value of p

Answer»

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


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