3. Verify whether the following are zeroes of the polynomial, indicated against them.

(i) \(p(x)=3x+1\), \(x=-{1\over 3}\)

(ii) \(p(x)=5x-\pi\), \(x={4\over 5}\)      

(iii) \(p(x)=x^2-1\), \(x=1, -1\)

(iv) \(p(x)=(x+1)(x-2)\), \(x=-1, 2\)

(v) \(p(x)=x^2\), \(x=0\)

(vi) \(p(x)=lx+m\), \(x=-{m\over l}\)

(vii) \(p(x)=3x^2-1\), \(x=-{1\over{\sqrt 3}},{2\over {\sqrt 3}}\)

(viii) \(p(x)=2x+1\), \(x={1\over 2}\)