Question

Calcule: (+5x) . (+4x)=
(-n) . (+6n)=
(-2y) . (5y)=
(2y) . (-7x)=
(-2x) . (-3y)=
(-3xy) . (-2y)=

(15x6) : (3x2)=
(16x4) : (8x)=
(-30x5) : (+3x3)=
(+8x6) : (-2x4)=
(-10y5) : (-2y)=
(-35x7) : (+5x3)=
(+15x8) : (-3x2)=
(8x) : (-8x)=
(-14x3) : (+2x2)=
(-10x3y) : (+5x2)=

Answer 1

a)
(+ 5x) . (+ 4x) =  20x²
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
b)

(- n) . (+ 6n) = - 6n²

***********************************
c)

(-2y) . (5y) = - 10y²

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)

(2y) . (- 7x) = - 14xy

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
e)

(- 2x) . (- 3y) = 6xy

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
f)

(- 3xy) . (- 2y) = 6xy²

- 3 . (-2) = 6
xy.y = xy²

*******************************
g)

(15x⁶) : (3x²)  =  5x⁴

   6 - 4          2
x           =  x

15x⁶      
-------- =  5x⁴ 
  3x²

****************************

h)

(16x⁴) : (8x ) = 2x³

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
i)

(- 30x⁵) : (+3x³) = - 10x²

- 30/3 = - 10
x⁵ / x³ = x²


¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
j)

(+8x⁶) : (- 2x⁴) = - 4x²

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

l)

(-10y⁵) : (-2y) =  5y⁴

- 10/ (-2) = + 5

y⁵/y = y⁴

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
m)

(-35x⁷) : (+5x³) = - 7x⁴

-35/5 = - 7

  7 - 3         4
x        =   x

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
n)

(+15x⁸) : (-3x²) =  - 5x⁶

15 / (-3) = - 5

   8 - 2           6
x           =  x

***********************************
o)

(8x) : (-8x) = - 1

  8x          1
 -----  =   -----  =  - 1
 - 8x        - 1

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
p)

(-14x³) : (+2x²) = - 7x 

- 14/2 = - 7

= x³ / x² 

   3 - 2
x            =  x

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
q)

(-10x³y) : (+5x²) = - 2xy

- 10/5 = - 2

x³/x² = x

**********************************

Answer 2

Resposta:

a)

(+ 5x) . (+ 4x) =  20x²

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

b)

(- n) . (+ 6n) = - 6n²

***********************************

c)

(-2y) . (5y) = - 10y²

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

d)

(2y) . (- 7x) = - 14xy

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

e)

(- 2x) . (- 3y) = 6xy

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

f)

(- 3xy) . (- 2y) = 6xy²

- 3 . (-2) = 6

xy.y = xy²

*******************************

g)

(15x⁶) : (3x²)  =  5x⁴

  6 - 4          2

x           =  x

15x⁶      

-------- =  5x⁴  

 3x²

****************************

h)

(16x⁴) : (8x ) = 2x³

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

i)

(- 30x⁵) : (+3x³) = - 10x²

- 30/3 = - 10

x⁵ / x³ = x²

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

j)

(+8x⁶) : (- 2x⁴) = - 4x²

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

l)

(-10y⁵) : (-2y) =  5y⁴

- 10/ (-2) = + 5

y⁵/y = y⁴

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

m)

(-35x⁷) : (+5x³) = - 7x⁴

-35/5 = - 7

 7 - 3         4

x        =   x

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

n)

(+15x⁸) : (-3x²) =  - 5x⁶

15 / (-3) = - 5

  8 - 2           6

x           =  x

***********************************

o)

(8x) : (-8x) = - 1

 8x          1

-----  =   -----  =  - 1

- 8x        - 1

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

p)

(-14x³) : (+2x²) = - 7x  

- 14/2 = - 7

= x³ / x²  

  3 - 2

x            =  x

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

q)

(-10x³y) : (+5x²) = - 2xy

- 10/5 = - 2

x³/x² = x

**********************************

Explicação passo a passo: