Question

verify that x is equal to 3 is a zero of polynomial p x is equal to 2 x cube minus 5 x square - 4 x + 3

Answer 1

2×3-5×3-4×3+3
54-45-12+3
57-57
=0 hence proved

Answer 2

Answer:p(x)= 2xcube - 5xsquare - 4x + 3

=2(3)cube - 5(3)square - 4(3) + 3

=54 - 45 - 12 + 3

=9 - 9

=0

Hope this will help you........