Question

3) Calcule as potências e as raízes de Monômios: a) ( + 3x)2 = b) (-8x4)2 = c)) V4/9x8 d) V9x2y2 = -​

Answer 1

Resposta:

$\textsf{Leia abaixo}$

Explicação passo a passo:

$\mathsf{a)\:(3x)^2 \iff 3^2x^2 \iff 9x^2}$

$\mathsf{b)\:(-8x^4)^2 \iff (-8)^2(x^4)^2 \iff 64x^8}$

$\mathsf{c)\:\sqrt{\dfrac{4}{9}x^8} \iff \sqrt{\dfrac{2^2}{3^2}(x^4)^2} \iff \dfrac{2}{3}x^4}$

$\mathsf{d)\:\sqrt{9x^2y^2} \iff \sqrt{3^2x^2y^2} \iff 3xy}$

Answer 2

Resposta:

a) ( + 3x)² =3²x²=9x²

b) (-8x⁴)² = (-8)²*x²ˣ⁴ =64*x⁸

c))  √[(4/9)*x⁸]   =√[(2²/3²)*x⁸] =(2/3) *x⁴

d) √(9x²y²) = √(3² x²y²) =3xy