Question

Check whether -2 and 2 are zeroes of the polynomial + 2​

Answer 1

-2 is the zero of +2.

2 is no the zero of +2

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Answer 2

Answer:

We know that if we have a polynomial P(x) and α

and β

are the zeroes of the polynomial. Then,

P(α)=0P(β)=0

So, -2 and 2 are the zeroes of the polynomial x+2

then if we substitute these zeroes in the given polynomial it is equal to zero.

For the zero -2,

x+2=(−2)+2=0

Hence -2 is the zero of the polynomial.

For the zero 2,

x+2=(2)+2=4≠0

Hence 2 is not the zero of the polynomial.

Therefore, only -2 is the zero of the given polynomial among -2 and 2