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ValeriaF3
@ValeriaF3
July 2022
1
4
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ПОМОГИТЕ ПОЖАЛУЙСТА
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Інуха
4(a2+b2)+21b2-20ab-36 =
=
4a2+25b2-20ab-36 =
=(4a2 - 20ab +25b2)-36 =
= (2a-5b)2 - 62=
= (2a-5b-6) (2a-5b+6)
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Thanks 1
ValeriaF3
Там не должно быть 36 вместо 62?
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Answers & Comments
=4a2+25b2-20ab-36 =
=(4a2 - 20ab +25b2)-36 =
= (2a-5b)2 - 62=
= (2a-5b-6) (2a-5b+6)