Question

5) Calcule a multiplicação e divisão dos monômios :

a) (+5x) . (-4x²) =
b) (-2x) . (+3x) =
c) (+5x) . (+4x) =
d) (-n) . (+ 6n) =
e) (+5x) . (-4x²) =
f) (15x⁶) : (3x²) =
g) (16x⁴) : (8x) =
h) (-30x⁵) : (+3x³) =
i) (+8x⁶) : (-2x⁴) =
j) (-14x³) : (+2x²) =
k) (-10x³y) : (+5x²) =
l) (15x⁷) : ( 6x⁵) =

Answer 1

Explicação passo-a-passo:

A

$5x \times - 4x {}^{2}$

$- 20x {}^{3}$

B

$- 2x \times 3x$

$- 6x {}^{2}$

C

$5x \times 4x$

$20x$

D

$- n \times 6n$

$- 6n {}^{2}$

E

$5x \times - 4x {}^{2}$

$- 20x {}^{3}$

F

$15x {}^{6} \div 3x {}^{2}$

$5x {}^{6} \times x {}^{2}$

$5x {}^{6 + 2}$

$5x {}^{8}$

G

$16x {}^{4} \div 8x$

$2x {}^{4} \times x$

$2x {}^{4 + 1}$

$2x {}^{5}$

H

$- 30x {}^{5} \div 3x {}^{3}$

$- 10x {}^{5} \times x {}^{3}$

$- 10x {}^{5 + 3}$

$- 10x {}^{8}$

I

$8x {}^{6} \div - 2x {}^{4}$

$- 4x {}^{6} \times x {}^{4}$

$- 4x {}^{6 + 4}$

$- 4x {}^{10}$

J

$- 14x {}^{3} \div 2x {}^{2}$

$- 7x {}^{3} \times x {}^{2}$

$- 7x {}^{3 + 2}$

$- 7x {}^{5}$

K

$- 10x {}^{3} y \div 5x {}^{2}$

$- 2x {}^{3} y \times x {}^{2}$

$- 2x {}^{3 +2 } y$

$- 2x {}^{5} y$

L

$15x {}^{7} \div 6x {}^{5}$

$\dfrac{15}{6} x {}^{7} \times x {}^{5}$

$\dfrac{15 {}^{ \div 3} }{6 {}^{ \div 3} } x {}^{7 + 5}$

$\dfrac{5}{2} x {}^{12}$