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kravcheko2011
@kravcheko2011
July 2022
1
11
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ПРОШУУУУУУУУУУУУУУУУУУ ПОМОГИТЕ!!!
[tex](a^{-3} +b^{-3})*(a^{-2} -b^{-2})^{-1}*(a x^{-2} -a^{-1}b^{-1} +b^{-2})^{-1} [/tex]
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Answers & Comments
m11m
(a⁻³ + b⁻³) * (a⁻² - b⁻²)⁻¹ * (a⁻² - a⁻¹b⁻¹ +b⁻²)⁻¹ =
=(
1
+
1
) * (
1
-
1
)⁻¹ * (
1
-
1
+
1 )
⁻¹ =
a³ b³ a² b² a² ab b²
= (
b³ + a³
) * (
b² - a²
)⁻¹ * (
b² - ab + a²
)⁻¹ =
a³b³ a²b² a²b²
=
(a³ + b³)
*
a²b²
*
a²b²
=
a³b³ -(a²-b²) a² - ab +b²
=
(a+b)(a² -ab +b²)
*
a²b²
=
-ab(a-b)(a+b) a² -ab +b²
=
ab
=
ab
- (a-b) b-a
2 votes
Thanks 1
kravcheko2011
спасибо огромное
kravcheko2011
А можешь ещё один решить
kravcheko2011
http://znanija.com/task/13440299 этот
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Answers & Comments
=( 1 + 1 ) * ( 1 - 1 )⁻¹ * ( 1 - 1 + 1 )⁻¹ =
a³ b³ a² b² a² ab b²
= (b³ + a³) * (b² - a²)⁻¹ * (b² - ab + a²)⁻¹ =
a³b³ a²b² a²b²
= (a³ + b³) * a²b² * a²b² =
a³b³ -(a²-b²) a² - ab +b²
= (a+b)(a² -ab +b²) * a²b² =
-ab(a-b)(a+b) a² -ab +b²
= ab = ab
- (a-b) b-a