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Verify whether the following are zeroes of the polynomial indicated against them.
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(i) \( p(y)=2 y^{2}+5 y-3 \) at \( y=-\frac{1}{2} \).
- (ii) \( p(z)=z^{2}+z-6 \) at \( z=-3 \).
(iii) \( p(x)=2 x^{3}-3 x^{2}+5 x-1 \) at \( x=1 \).
-(iv) \( p(t)=2 x^{3}-9 x^{2}+x+12 \) at \( x=\frac{3}{2} \).
(v) \( p(x)=2 x^{3}-13 x^{2}+17 x+12 \) at \( x=2,-3 \).
(vi) \( p(x)=2 x^{3}-3 x^{2}+7 x+6 \) at \( x=1, \frac{1}{2} \).
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