Question

√32 + 2√50 - 2 √8?
tem q calcular o perimetro.. me ajudem.

Answer 1

√32 + 2√50 - 2√8
4√2 + 2.5√2 - 2.2√2
4√2 + 10√2 - 4√2
4√2 - 4√2 + 10√2
= 10√2

Resp.: 10√2
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32: 2
16: 2
8: 2
4: 2
2: 2
1     =   √16.√2 = 4√2

32 = 4√2
---------------------------------
50: 2
25: 5
5: 5
1       = √25.√2 = 5√2

50 = 5√2
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8: 2
4: 2
2: 2
1      =  √4.√2 = 2√2

8 = 2√2

Answer 2

Oie, Td Bom?!

$= \sqrt{32} + 2 \sqrt{50} - 2 \sqrt{8}$

$= \sqrt{4 {}^{2} \: . \: 2} + 2 \sqrt{5 {}^{2} \: . \: 2 } - 2 \sqrt{2 {}^{2} \: . \: 2}$

$= \sqrt{4 {}^{2} } \sqrt{2} + 2 \sqrt{5 {}^{2} } \sqrt{2} - 2 \sqrt{2 {}^{2} } \sqrt{2}$

$= 4 \sqrt{2} + 2 \: . \: 5 \sqrt{2} - 2 \: . \: 2 \sqrt{2}$

$= 4 \sqrt{2} + 10 \sqrt{2} - 4 \sqrt{2}$

$= 10 \sqrt{2}$

Att. Makaveli1996