Question

calcule: a) 2x³.5x⁵= b) 34xy.2xy= c) -92x².5x⁶ d) 4x.2x.x= e) 20x³:5x²= f) 84xy:2xy= g) -9x⁸:3x⁶= h) (-18x²):(-2x)=​

Answer 1

Resposta:

Explicação passo a passo:

a) 2x³.5x⁵

= 2.5.x^(3+5)

= 10x^8

__________________

b) 34xy.2xy

= 34.2.x^(1+1).y^(1+1)

= 68x^2.y^2

_____________

c) -92x².5x⁶

= - 92.5 . x^(2+6)

= - 460 x^8

_______________

d) 4x.2x.x

= 4.2.x^(1+1+1)

= 8x^3

_____________

e) 20x³:5x²

= 20/5 . x^(3-2)

= 4x

_________

f) 84xy:2xy

= 84/2 . xy/xy

= 42

_____________

g) -9x⁸:3x⁶

= -9/3 . x^(8-6)

= - 3x^2

____________

h) (-18x²):(-2x)

= + 18/2 . x^(2-1)

=​ 9x