Question

Check whether 1and -1are the
zeroes of polynomial x²+5x-6 or not ?​

Answer 1

Answer:

First, let us see if 2 is a zero of the polynomial.  

Let p(x) be =  x^2 - 5x + 6.  

p(2) = 2^2 - 5*2 + 6  

p(2) = 4 - 10 + 6  

p(2) = -6 + 6  

p(2) = 0  

Therefore, 2 is a zero of the polynomial  x^2 - 5x + 6.  

Now let us see if 3 is a zero of the polynomial.

Let p(x) be =  x^2 - 5x + 6.

p(3) = 3^2 - 5*3 + 6

p(3) = 9 - 15 + 6

p(3) = -6 + 6

p(3) = 0

Therefore, 3 is also another zero of the polynomial  x^2 - 5x + 6.

Answer 2

Answer:

First, let us see if 2 is a zero of the polynomial.

Let p(x) be =  x^2 - 5x + 6.

p(2) = 2^2 - 5*2 + 6

p(2) = 4 - 10 + 6

p(2) = -6 + 6

p(2) = 0

Therefore, 2 is a zero of the polynomial  x^2 - 5x + 6.