Let R be the set of real numbers and R* be the set of nonzero real numbers. Consider R* xR with the operation • given by (a, b) • (c, d) = (ac, bc + d).Which of the following are always true?Lütfen bir ya da daha fazlasını seçin:O The operation • is commutative.O Every element has an inverse.O The operation • is associative.O This set is an abelian group under •O There is no identity element for the operation •.This set is closed under the operation •.

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Let R be the set of real numbers and R* be the set of nonzero real numbers. Consider R R with the operation • given by (a, b) • (c, d) = (ac, bc+ d). Which of the following are always true? Lütfen bir ya da daha fazlasını seçin: O The operation • is commutative. Every element has an inverse. The operation • is associative. This set is an abelian group under • O There is no identity element for the operation •. This set is closed under the operation •.