College Algebra (R-2: Exponents and Radicals)
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scientific notation
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a * 10^n; 1 <= a < 10, n an integer, a in decimal form
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nth Root
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For a natural number n and a and b real numbers: a is an nth root of b if a^n = b
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Number of Real nth Roots of b, if b > 0 and n is even
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2
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Number of Real nth Roots of b, if b > 0 and n is odd
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1
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Number of Real nth Roots of b, if b = 0 and n is even or odd
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1; 0 is the only nth root of b = 0
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Number of Real nth Roots of b, if b < 0 and n is odd
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1
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rationalizing the denominator
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Eliminating a radical from a denominator
