Question

Multiplicaçao de polimonios
a)(-3x).(3x-1)
b)(2x).(2x-5)
c)(-6x²).(6x²+4)
d)(x).(x-3)
e)(x).(x-1)
f)(x).(x³+8)
g)(x²).(x²+6)

Answer 1

Multiplicaçao de polimonios
FAZENDO PASSO A PASSO

a)(-3x).(3x-1)

(-3x)(3x - 1) =
-3x.3x + 3x(1) =
- 9x²    + 3x

(-3x)(3x-1) =  - 9x² + 3x

b)(2x).(2x-5)

(2x)(2x - 5)
2x.2x  - 2x(5)  
4x²   - 10x

(2x)(2x - 5) = 4x² - 10x

c)(-6x²).(6x²+4)

(-6x²)(6x² + 4) 
-(6x² .6x²) - 6x²(4) =
- 36x⁴ = 24x²

(-6x²)(6x² + 4) = - 36x⁴ - 24x²

d)(x).(x-3)

(x)(x - 3)
x.x -  3x
x²  - 3x

(x)(x - 3) = x² - 3x

e)(x).(x-1)

(x)(x-1)
x.x -x(1)
x² - 1x

(x)(x -1)= x² - 1x  
ou
(x )(x - 1) = x² - x)

f)(x).(x³+8)

(x)(x³ + 8)
x.x³ + x(8)
x⁴ + 8x

(x) (x³ + 8) = x⁴ + 8x

g)(x²).(x²+6)

(x²)(x² + 6)
x².x² + x²(6(
x⁴ + 6x²

(x²)(x² + 6) = x⁴ + 6x²