Which of the following are like terms

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answer is B.

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Detailed Solution

In this option, the variables are the same. But the exponents are different.
y has an exponent of one in the first term, but an exponent of two in the second term.
So the conditions are not like that.
2)

In this option, the variables are the same. Also the exponents are the same.
So the terms are like.
3)

In this option, the variables are the same. But the exponents are different.
z has an exponent of two in the first term, but an exponent of one in the second term.
So the conditions are not like that.
4)

In this option, the variables are the same. But the exponents are different.
x has an exponent of two in the first term, but an exponent of one in the second term.
So the conditions are not like that.
∴ Option 2 is correct.

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