Getal & Ruimte (12e editie) - havo wiskunde A

'Wortels vereenvoudigen'.

2 havo/vwo 5.3 Wortels herleiden

Wortels vereenvoudigen (4)

opgave 1

Herleid.

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

3 havo 5.4 Wortels herleiden

Wortels vereenvoudigen (1)

opgave 1

Herleid.

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

"