$7\cdot\sqrt{\frac37} + 3\cdot\sqrt{\frac73}$

Question

$7.\sqr{3\frac7} + 3.\sqr{7\frac3}$

Answer 1

$7 \sqrt {\frac 3 7}+3 \sqrt {\frac 7 3}=7 \sqrt {\frac {9} {21}}+3 \sqrt {\frac {49}{21}}=7 \cdot 3 \frac 1 {\sqrt{21}}+3 \cdot 7 \frac 1 {\sqrt{21}}=2 \cdot 21 \frac 1 {\sqrt{21}}=2\sqrt{21}$

Comments

$2.21 1\sqr\frac21 = 2\sqr21$ nasıl buldunuz 

Answer 2

distaki sayilari ice kare olarak atarsan $\sqrt {21}+\sqrt{21}$ olur islem.

Comments

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