question no. 3 and 4 .... plz answer me.
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ans of 4 is
9+6z+z2
9+3z+3z+z2
3(3+z)+1z(3+z)
(3+z)(3+1z)
9+6z+z2
9+3z+3z+z2
3(3+z)+1z(3+z)
(3+z)(3+1z)
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your answer is here mate
hope u like it
hope u like it
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