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ризван56
@ризван56
December 2021
1
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дам 10 баллов не игнорируйте пж
разложите на множители 1) х2-2х+1 2) х2+6х+9 3) х2-25 4) 27а3+8 5) 16х4-81
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ShirokovP
Verified answer
1) x^2 - 2x + 1 = (x - 1)(x - 1)
2) x^2 + 6x + 9 = (x + 3)(x + 3)
3) x^2 - 25 = x^2 - 5^2 = (x - 5)(x + 5)
4) 27a^3 + 8 = (3a)^3 + 2^3 = (3a + 2)(9a^2 - 6a + 4)
5) 16x^4 - 81 = (4x^2)^2 - (9)^2 = (4x^2 - 9)(4x^2 + 9) =
= (2x - 3)(2x + 3)(4x^2 + 9)
3 votes
Thanks 2
ризван56
спасибо :)
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Answers & Comments
Verified answer
1) x^2 - 2x + 1 = (x - 1)(x - 1)2) x^2 + 6x + 9 = (x + 3)(x + 3)
3) x^2 - 25 = x^2 - 5^2 = (x - 5)(x + 5)
4) 27a^3 + 8 = (3a)^3 + 2^3 = (3a + 2)(9a^2 - 6a + 4)
5) 16x^4 - 81 = (4x^2)^2 - (9)^2 = (4x^2 - 9)(4x^2 + 9) =
= (2x - 3)(2x + 3)(4x^2 + 9)