Question

which of root 2 and 2 is a zero of the polynomial P of x = 2 x cube minus 2 x? why​

Answer 1

Answer:

Step-by-step explanation:

Let x=√2

P(x) = 2(√2)^3-2*√2

=4√2-2√2

=2√2

No √2 is not the zero of polynomial

Let x=2

P(x)= 2(2)^3-2*2

= 16-4

=14

So 2 is also not the zero of polynomial