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so, (x-1) is a zero
after this, u can divide (x-1) by the given polynomial by long division method.
 the quotient u get can be divided into two by using splitting the middle term method. and u get 3 factors. done!
1 5 1
For x=1, p(1)=2(1)^3+5(1)^2-5(1)-2=2+5-5-2=0 hence, zero of the polynomial is 1.
1 5 1
Hope it will help u.
Plz mark as best....
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