Question

purfavo me ajude quem é bom em monimio purfavo essa tarefa e pra manhã

a ) ab2 + ab3 + a cd - 7 a cd + a2 b+ 5 a b3

b ) 2×2 y 3 7 × 5 y

c) 7 x3 y 5. z . 7×2 . y3. z2

d) axb + 7xy z + ax2b - 7y. x z + axb - 8 a x2b

e ) 10x5 .yb .5x4 . y2 .b3

f) 25x2 y5 + 7z + 8y + 30 x2 y5 - 7z + 10z

g) x2 - [2xy +x 2 - ( y2 + 3xy ) + 2y2 ] - yy

se vc não entender a foto ok

Answer 1

a)

ab² + ab³ + acd - 7acd + a²b + 5ab³ =

ab² + a²b + (ab³ + 5ab³) + (acd - 7acd) =

ab² + a²b + (1 + 5)ab³ + (1 - 7)acd =

ab² + a²b + 6ab³ - 6acd =

ab(b + a + 6b²) - 6acd
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b)

2x²y³7x⁵y =

(2x² . 7x⁵) (y³ . y) =

(2 . 7).(x² . x⁵) .(y³ . y) =

14 . x⁽²⁺⁵⁾ . y⁽³⁺¹⁾ =

14 . x⁷ . y⁴ =

14x⁷y⁴
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c)

7x³y⁵ . z7x² . y³z² =

(7 . 7) . (x³ . x²) . (y⁵ . y³) . (z . z²) =

49 . (x⁽³⁺²⁾) . (y⁽⁵⁺³⁾ ). (z⁽¹⁺²⁾) =

49 . x⁵ . y⁸ . z³ =

49x⁵y⁸z³
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d)

axb + 7xyz + ax²b - 7yxz + axb - 8ax²b =

(axb + axb) + (7xyz - 7yxz) + (ax²b - 8ax²b) =

(1 + 1)axb  + (7 - 7)xyz + (1 - 8)ax²b =

2axb + 0 - 7ax²b =

2axb - 7ax²b =

axb(2 - 7x)
-----------------------------

e)

10x⁵ . yb . 5x⁴ . y² . b³ =

(10 . 5) . (x⁵ . x⁴) . (y . y²) . (b . b²) =

50 . (x⁽⁵⁺⁴⁾) . (y⁽¹⁺²⁾) . (b⁽¹⁺²⁾) =

50 . x⁹ . y³ . b³ =

50 . (x³yb)³ =

50(x³yb)³
--------------------------------

f)

25x²y⁵ + 7z + 8y + 30x²y⁵ - 7z + 10z =

(25x²y⁵ + 30x²y⁵) + (7z - 7z + 10z) + 8y =

(25 + 30)x²y⁵ + (7 - 7 + 10)z + 8y =

55x²y⁵ + 3z + 8y =

y(55x²y⁴ + 8) + 3z
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g)

x² - [2xy + x² - (y² + 3xy) + 2y²] - yy =

x² - [2xy + x² - y² - 3xy + 2y²] - y² =

x² - [(2xy - 3xy) + (-y² + 2y²) + x²] - y² =

x² - [(2 - 3)xy + (-1 + 2)y² + x²] - y² =

x² - [-xy + y² + x²] - y² =

x² + xy - y² - x² - y² =

(x² - x²) + (-y² - y²) + xy =

(1 - 1)x² + (- 1 - 1)y² + xy =

0x² - 2y² + xy =

- 2y² + xy =

y(-2y + x)