# 03 surds - 6 2 6 = 29 29 29 3 2 6 3 ii 2 1 = 29 29 29 2 1 2...

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Surds A surd is an irrational number. It is any number that includes a radical symbol, 2) a a b b = , and cannot be calculated exactly. Surd Laws 1) a b ab × = ( 29 2 3) a a = ( 29 e.g. 50 i 25 2 = × 5 2 = ( 29 3 ii x 2 x x = × x x = ( 29 5 4 iii 5 2 = ( 29 20 9 iv 2 5 3 =

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3 3 8 2 = + Surd Arithmetic Like surds can be added or subtracted, unlike surds cannot ( 29 e.g. 4 3 6 2 3 2 2 i + - + 18 3 3 6 2 6 = + +
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Unformatted text preview: 6 2 6 = + + + ( 29 ( 29 ( 29 3 2 6 3 ii + + 2 1 = -( 29 ( 29 ( 29 2 1 2 1 iii +-1 = conjugate surds 4 4 2 2 = -+ ( 29 ( 29 2 2 2 iv-6 4 2 = -Exercise 2C; 1, 2adgj, 3behkm, 4adgj, 5ace, 6behk, 8, 10beh, 11ac, 12bdfh, 13aceg, 14afil, 15bdh, 16ac, 18ce,19*...
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