Question

Resolva por fatoraçao e simplifique o maximo possivel A) (0,2)²+ √400-√5× √20 B)20×[(√7)²+(∛3)³]

Answer 1

Oie, Td Bom?!

A)

$= (0,2) {}^{2} + \sqrt{400} - \sqrt{5} \: . \: \sqrt{20}$

$= ( \frac{1}{5} ) {}^{2} + 20 - \sqrt{100}$

$= \frac{1}{25} + 20 - 10$

$= \frac{1}{25} + 10$

$= \frac{1 + 250}{25}$

$= \frac{251}{25}$

$= 10,04$

B)

$= 20 \: . \: \left [( \sqrt{7} ) {}^{2} + ( \sqrt[3]{3} ) {}^{3} \right ]$

$= 20 \: . \: \left [ \sqrt{7} {}^{2} + \sqrt[3]{3} {}^{3} \right ]$

$= 20 \: . \: \left [ 7 + 3 \right ]$

$= 20 \: . \: 10$

$= 200$

Att. Makaveli1996

Answer 2

Explicação passo-a-passo:

a)

(0,2)² + √400 - √5 x √20

= 0,04 + 20 - √100

= 20,04 - 10

= 10,04

b)

20 x [(√7)² + (³√3)³]

= 20 x [7 + 3]

= 20 x 10

= 200