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hytbr
@hytbr
July 2022
2
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Упростите выражение и найдите его значение: -3y^2+6yt-4t-2yt-t+y^2-4yt при у=-1, t=2/5
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Lee87Ho
=-y^2-5t
-(-1)^2-5*2/3=-1-10/5=-1-2=-3
3 votes
Thanks 3
hytbr
-3y^2+y^2 будет -2Y^2, проверьте еще раз пж
konovikons
= -2y^2-5t+2yt при y=-1 и t=2/5 -2*1-5*2/5+2*(-1)*2/5=-2-2+(-4/5)=-4-4/5=-4,8
0 votes
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Answers & Comments
-(-1)^2-5*2/3=-1-10/5=-1-2=-3