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Deronator
@Deronator
June 2022
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Вычислите выражения 2,5a(a-2y)-2y(y-2.5a), а= -0,2; y= -0.5
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kattinstoyn503
2,5a(a-2y)-2y(y-2.5a)=
2,5а²-5ау-2у²+5ау=
2,5а²-2у²=
2,5 × (-0,2)² - 2 × (-0,5)²=
2,5 × 0,04 - 2×0,25=
0,1 - 0,5=-0,4
3 votes
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Answers & Comments
2,5а²-5ау-2у²+5ау=
2,5а²-2у²=
2,5 × (-0,2)² - 2 × (-0,5)²=
2,5 × 0,04 - 2×0,25=
0,1 - 0,5=-0,4