Pierwiastki w wyrażeniach Lesson Slides: 3 Slides

3 Slides • 8 Questions

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Pierwiastki w wyrażeniach

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Pierwiastki mogą występować w bardziej złożonych wyrażeniach arytmetycznych

$2\sqrt{25}=2\cdot5=10$
$\sqrt{144}+\sqrt{256}+\sqrt{324}=12+16+18=46$
$\frac{2+2\sqrt{16}}{5-\sqrt{4}}=\frac{2+2\cdot4}{5-2}=\frac{10}{3}=3\frac{1}{3}$

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Oblicz

$3\sqrt{49}-2\sqrt{4}=$

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Oblicz

$\frac{\sqrt{64}+\sqrt{16}}{\sqrt{81}-\sqrt{36}}=$

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5

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Oblicz

$\frac{\left(3+4\sqrt{9}\right)\left(6-\sqrt{16}\right)}{\sqrt{36}}=$

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Dla dowolnej liczby a:

\left(\sqrt{a}\right)^2=\sqrt{a^2}=\sqrt{a\cdot a}=a

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Oblicz

$\sqrt{37^2}=$

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Oblicz

$\sqrt{159}\cdot\sqrt{159}=$

Type answer...

9

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Oblicz

$\sqrt{3210\cdot3210}=$

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10

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Oblicz

$\left(\sqrt{67324}\right)^2=$

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11

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Rolnik przeznaczył pod zasiew nowej odmiany żyta część pola w kształcie kwadratu o powierzchni 400m².

Oblicz, ile metrów sznurka zużył do wytyczenia tego obszaru.

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Pierwiastki w wyrażeniach

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