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musaelyan2000
@musaelyan2000
August 2022
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Математика. 8 класс
помогите!
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99tasha
Verified answer
А²-6а+9-а²-а=
9-7а
----------------------------
1 votes
Thanks 1
19997katya
(a-3)²-a(a+1)=a²-6a+9-a²-a=-7a+9=9-7a
a²
и a
² взаимно уничтожаются
-6a+a=-7a
0 votes
Thanks 0
musaelyan2000
Там a(a+1)
99tasha
Что тебя смущает?
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Answers & Comments
Verified answer
А²-6а+9-а²-а=9-7а----------------------------
a² и a² взаимно уничтожаются
-6a+a=-7a