Getal & Ruimte (12e editie) - havo wiskunde A
'Wortels vereenvoudigen'.
| 2 havo/vwo | 5.3 Wortels herleiden |
opgave 1Herleid. 1p a \(\sqrt{20}\) FactorVoorWortelteken (1) 0086 - Wortels vereenvoudigen - basis - 0ms a \(\sqrt{20} = \sqrt{4} ⋅ \sqrt{5} = 2 \sqrt{5} \text{.}\) 1p 1p b \(-6 \sqrt{112}\) FactorVoorWortelteken (2) 0087 - Wortels vereenvoudigen - basis - 0ms b \(-6 \sqrt{112} = -6 ⋅ \sqrt{16} ⋅ \sqrt{7} = -6 ⋅ 4 ⋅ \sqrt{7} = -24 \sqrt{7} \text{.}\) 1p 1p c \(\sqrt{1\frac{11}{25}}\) BreukInWortel (1) 008b - Wortels vereenvoudigen - basis - 72ms c \(\sqrt{1\frac{11}{25}} = \sqrt{\frac{36}{25}} = {\sqrt{36} \over \sqrt{25}} = \frac{6}{5} = 1\frac{1}{5} \text{.}\) 1p 1p d \({6 \sqrt{24} \over \sqrt{2}}\) Delen (4) 00dc - Wortels vereenvoudigen - basis - 7ms d \({6 \sqrt{24} \over \sqrt{2}} = 6 ⋅ {\sqrt{24} \over \sqrt{2}} = 6 \sqrt{12} = 6 ⋅ \sqrt{4} ⋅ \sqrt{3} = 6 ⋅ 2 ⋅ \sqrt{3} = 12 \sqrt{3}\) 1p |
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| 3 havo | 5.4 Wortels herleiden |
opgave 1Herleid. 1p \(\sqrt{1\frac{46}{49}}\) BreukInWortel (2) 008c - Wortels vereenvoudigen - basis - 1ms ○ \(\sqrt{1\frac{46}{49}} = \sqrt{\frac{95}{49}} = {\sqrt{95} \over \sqrt{49}} = {\sqrt{95} \over 7} = \frac{1}{7} \sqrt{95} \text{.}\) 1p |