[" 5.When "a=0,b=-1," find the value of ...

[" 5.When "a=0,b=-1," find the value of the given expressions: "],[[" (i) "2a+2b," (ii) "2a^(2)+b^(2)+1," (iii) "2a^(2)b+2ab^(2)+ab],[" (iv) "a^(2)+ab+2]]

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