Simplify Radical Expression

MathematicsSquare RootsMediumYKS

Published:

$$\frac{(\sqrt{10} - \sqrt{5}) \cdot (2 + \sqrt{2})}{\sqrt{45} + \sqrt{20}}$$

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Step by Step Written Solution

1
Step 1

Merhaba Aysin, hadi bu köklü sayı sorusunu adım adım birlikte çözelim.

Kök İfadelerle İşlem

2
Step 2

Öncelikle pay ve paydadaki ifadeleri düzenleyelim. Pay kısmında karekök on eksi karekök beş var. Paydayı ise daha basit kök terimlerine ayıralım.

$$\frac{\sqrt{10} - \sqrt{5}}{\sqrt{45} + \sqrt{20}}$$
3
Step 3

Karekök kırk beş, dokuz çarpı beşten üç kök beş eder. Karekök yirmi ise dört çarpı beşten iki kök beş eder.

$$45 = 9 \cdot 5 \implies \sqrt{45} = 3\sqrt{5}$$
$$20 = 4 \cdot 5 \implies \sqrt{20} = 2\sqrt{5}$$
4
Step 4

Şimdi bu değerleri paydada yerine yazalım. Üç kök beş ile iki kök beşi topladığımızda beş kök beş elde ederiz.

$$\frac{\sqrt{10} - \sqrt{5}}{3\sqrt{5} + 2\sqrt{5}}$$
5
Step 5

Paydayı topladığımızda ifade beş kök beşe dönüşür.

$$\frac{\sqrt{10} - \sqrt{5}}{5\sqrt{5}}$$

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About This Question

Subject
Mathematics
Topic
Square Roots
Difficulty
Medium
Exam
YKS
Question Type
Open Ended

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