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1
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Which expression always equals 1?
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2
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Which equation is not true?
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3
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The expression  is equivalent to
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4
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The expression  is equivalent to
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5
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The expression  is equivalent to a) | 1 | c) |  | b) | 2 | d) |  |
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6
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If  , then the value of the expression  is
equivalent to a) | 1 | c) | k | b) |  | d) |  |
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7
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The expression  is equivalent to
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8
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The expression  is equivalent to
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