Question

show that 3 is a zero of the polynomial 2x 3 - x 2 - 13x - 6. hence find all the other zeroes of this polynomial.

Answer 1

put the value of x=3 in the polynomial
2x³-x²-13x-6
and get the value equal to zero
and the other two zeros of the polynomial are
-1 and -½

Answer 2

Answer:

First you need to solve P(3) = 0 where you have to substitute x as 3.

And then you need to divide the polynomial by x-3. Then you need to factorise your quotient, by factorising it you will get 2 answers which will be your 2 zeroes.