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Given the set  , which elements of A are not rational numbers? (List all of them.)
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The multiplicative inverse of –1/12 is
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Find the L.C.D. (least common denominator) of 2/5, 11/12, -1/10, and 4/15.
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Rationalize the denominator and simplify: 
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Eliminate negative exponents and simplify: 
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Simplify, express your answer in terms of positive exponents and rationalize the denominator, if necessary:  , x > 0, y > 0
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Multiply and simplify: 
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Perform the operation and simplify: 
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Divide  by x + 4; state the quotient (Q) and the remainder (R).
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Factor completely: 
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Factor completely: 
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Factor completely: 
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Perform the operations and simplify:
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Perform the operations and simplify: 
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Rationalize the denominator and simplify:
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