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Give five examples of expressions containing one variable and five examples of expressions containing two variables

Q : 1         Give five examples of expressions containing one variable and five examples of expressions  containing two variables. 

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Five examples of expressions containing one variable are:

x^{^{4}}, y, 3z, p^{^{2}}, -2q^{3}

Five examples of expressions containing two variables are:

x + y, 3p-4q,ab,uv^{2},-z^{2}+x^{3}

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