Question

find whether 2 x minus 3 is a zero of the polynomial 2x cube - 9 X square + X + 12​

Answer 1

2x-3=0

=x=3/2

=2(3/2)cube-9(3/2)square+3/2+12

=2(27/8)-9(9/4)+3/2+12

=54/8-81/4+3/2+12

=(54-162+12+98)/8

=(-108+12+96)/8

/(-108+108)/8

=0/8

=0

yes.