Question

Show that 2 is a zero of the polynomial 2x3-7x2 +5x+2​

Answer 1

Answer:

Given function is f(X) = 2 x^3 - 7x^2 + 5x + 2

To prove :  2 is a zero .

So,

f (2) = 2*2^3 -7* 2^2 + 5*2 +2

=  16 -28 + 10 +2

  =28 - 28

  = 0

Hence proved. 2 is a zero of the polynomial.