Respostas
respondido por:
10
Aplique as propriedades das potências e calcule os produtosFAZENDO passo a passo
(d)
(-5x)(-8y²) =
(-)(-)(5x8)(xy²) =
+ 40 xy²
então
(-5x)(-8y²) = + 40xy²
(e)
x²(xy)
x².xy = x³y
x².(xy) =x³y
(f)
(x²y)(x²y²)
x²x²yy²=
x⁴y³
(x²y).(x²y²) = x⁴y³
(g)
(2x²y²).(3x³y³) =
(2)(3)x²x³y²y³
6x⁵y⁵
(2x²y²).(3x³y³) = 6x⁵y⁵
(h)
(3x²z²).(-2xy).(6z²) =
(3)(-2)(6)x²xyz²z²
(+)(-)(+)36x³yz⁴
(-)(+)36x³yz⁴
- 36x³yz⁴
(3x²z²).(-2xy).(6z²) = - 36x³yz⁴
(i)
(-2x²).(-4y²).(-5x³y⁴)
(-)(-)(-)(2)(4)(5)x²y²x³y⁴
(+)(-) 40 x²x³y²y⁴
- 40x⁵y⁶
(-2x²).(-4y²).(-5x³y⁴) = - 40x⁵y⁶
(j) (2/5x²y²)(3/7x³y³)
(2)(3)
--------x²y²x³y³
(5)(7)
6
--- x²x³y²y³
35
(6/35)x⁵y⁵
(2/5x²y²)(3/7x³y³)= (6/35)x⁵y⁵
(4)
(4a⁴ ,b³)²
(4a⁴.b³).(4a⁴.b³)
(4)(4)a⁴a⁴b³b³ =
16a⁸b⁶
(4a⁴ ,b³)² = 16a⁸b⁶
(d)
(-5x)(-8y²) =
(-)(-)(5x8)(xy²) =
+ 40 xy²
então
(-5x)(-8y²) = + 40xy²
(e)
x²(xy)
x².xy = x³y
x².(xy) =x³y
(f)
(x²y)(x²y²)
x²x²yy²=
x⁴y³
(x²y).(x²y²) = x⁴y³
(g)
(2x²y²).(3x³y³) =
(2)(3)x²x³y²y³
6x⁵y⁵
(2x²y²).(3x³y³) = 6x⁵y⁵
(h)
(3x²z²).(-2xy).(6z²) =
(3)(-2)(6)x²xyz²z²
(+)(-)(+)36x³yz⁴
(-)(+)36x³yz⁴
- 36x³yz⁴
(3x²z²).(-2xy).(6z²) = - 36x³yz⁴
(i)
(-2x²).(-4y²).(-5x³y⁴)
(-)(-)(-)(2)(4)(5)x²y²x³y⁴
(+)(-) 40 x²x³y²y⁴
- 40x⁵y⁶
(-2x²).(-4y²).(-5x³y⁴) = - 40x⁵y⁶
(j) (2/5x²y²)(3/7x³y³)
(2)(3)
--------x²y²x³y³
(5)(7)
6
--- x²x³y²y³
35
(6/35)x⁵y⁵
(2/5x²y²)(3/7x³y³)= (6/35)x⁵y⁵
(4)
(4a⁴ ,b³)²
(4a⁴.b³).(4a⁴.b³)
(4)(4)a⁴a⁴b³b³ =
16a⁸b⁶
(4a⁴ ,b³)² = 16a⁸b⁶
respondido por:
6
d)(- 5 x) ( - 8 y²) = + 40 xy
e) x² (x y) = x³ y
f) (x² y) (x³ y²) = x^5 y³
g) (2 x² y²) (3 x³ y³) = 6 x^5 y^5
h) (3 x² z) (-2 x y) = -36 x³ y z^4
e) x² (x y) = x³ y
f) (x² y) (x³ y²) = x^5 y³
g) (2 x² y²) (3 x³ y³) = 6 x^5 y^5
h) (3 x² z) (-2 x y) = -36 x³ y z^4
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