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Elinaaa
@Elinaaa
July 2022
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4
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(3\2х-у - 2\2х+у - 1\2х-5у): у(квадрат)\ 4х(квадрат) - у(квадрат)
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m11m
Verified answer
(
3
-
2
-
1
) :
у²
=
(2х-у 2х+у 2х-5у) 4х²-у²
=(
3(2х+у)(2х-5у)-2(2х-у)(2х-5у)-(2х-у)(2х+у)
) *
(2х-у)(2х+у)
=
( (2х-у)(2х+у)(2х-5у) ) у²
=
3(4х²+2ху-10ху-5у
²
)-2(4х²-2ху-10ху+5у²)-(4х²-у²)
=
у²(2х-5у)
=
12х²-24ху-15у²-8х²+24ху-10у²-4х²+у²
=
у²(2х-5у)
=
-24у²
=
-24
у²(2х-5у) 2х-5у
2 votes
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Verified answer
( 3 - 2 - 1 ) : у² =(2х-у 2х+у 2х-5у) 4х²-у²
=(3(2х+у)(2х-5у)-2(2х-у)(2х-5у)-(2х-у)(2х+у)) * (2х-у)(2х+у) =
( (2х-у)(2х+у)(2х-5у) ) у²
=3(4х²+2ху-10ху-5у²)-2(4х²-2ху-10ху+5у²)-(4х²-у²) =
у²(2х-5у)
=12х²-24ху-15у²-8х²+24ху-10у²-4х²+у² =
у²(2х-5у)
= -24у² = -24
у²(2х-5у) 2х-5у