Question

Answer to 4th question. ☺️

Answer 1

substitute given values there . if you get 0 then they are zeroes of polynomials. hope it helps . please mark brainliest.

Answer 2

zeores of polynomial x^2 - 1 are -1 and 1^n...

reason

x^2 -1 = (x+1) (x-1)

hence x = 1 or x = -1

1^n is always 1

so -1 and 1^n are zeroes of x^2 -1