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quiz3Asoln

# quiz3Asoln - 3 x 2-2 x 1 Solution(2 x-3 x 2-2 x 1 = 2 x 3-4...

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Solutions to Quiz 3 Jason Harrington July 4, 2009 1. (2pts) Rationalize the denominator and then simplify: 2 5 - 3 Solution: 2 5 - 3 = 2 5 - 3 · 5 + 3 5 + 3 | {z } conjugate = 2(5 + 3) (5 - 3)(5 + 3) | {z } F.O.I.L. = 5 2 + 6 22 2. (2pts) Expand and write the result in standard form: (2
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Unformatted text preview: 3)( x 2-2 x + 1) Solution: (2 x-3)( x 2-2 x + 1) = 2 x 3-4 x 2 + 2 x-3 x 2 + 6 x-3 = 2 x 3-7 x 2 + 8 x-3 3. (1pt) Evaluate ±-1 64 ²-1 / 3 Solution: ±-1 64 ²-1 / 3 = (-64) 1 / 3 = 3 √-64 =-3 √ 4 3 =-4 1...
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