(i) Given a2 + b2 -2a2 + c2 + 4a
The like terms in the given algebraic expressions are a2 and −2a2.
(ii) Given 3x + 4xy − 2yz + 52zy
The like terms in the given algebraic expressions are -2yz and 5/2zy.
(iii) Given abc + ab2c + 2acb2 + 3c2ab + b2ac − 2a2bc + 3cab2
The like terms in the given algebraic expressions are ab2c, 2acb2, b2ac and 3cab2.