Question

Obedecidas as condições de existência, efetue
A)x*5 . x*3
B) y*6 : y*2
C) (2xy*5 / z*2)*3 . (Xz*3 / y)*4
D) (3a*2b*3 / cd )*3 ÷ (3ab*4 / 3ab*4 )*-2
ME AJUDEM,POR FAVOR

Answer 1

a) x^5.x³=x^8

b) y^6:y²= y⁴

c) (2 x y^5/z²)³ : (xz³/y)⁴=

(8x³y^15/z^6) : (x⁴z^7/y⁴)=

8 x^7 y^15 z^12 : z^6 y⁴=

8 x^7 y^11 z^6

d) (3a² b³/ cd)³ : (3ab⁴/3ab⁴)-²=

(27 a^6 b^9/c³ d³) : ( 1 ) -²=

27 a^6 b^9/ c³ d³ : 1=

27 a^6 b^9/c³ d³.