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Banalcamomile
@Banalcamomile
July 2022
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Помогите пожалуйста: -3х^2-х+8=(х-3)^2
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slavadd
- 3х^2 - x + 8 = x^2 - 6x + 9
- 3x^2 - x^2 - x + 6x + 8 - 9 = 0
-4x^2 + 5x - 1 = 0
4x^2 - 5x + 1 = 0
D = 25 - 4*(4)*1 = 25 - 16 = 9; √D = 3
х1 = (5 +3) /8 = 1
х2 = (5 - 3) /8 = 1/4
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Answers & Comments
- 3x^2 - x^2 - x + 6x + 8 - 9 = 0
-4x^2 + 5x - 1 = 0
4x^2 - 5x + 1 = 0
D = 25 - 4*(4)*1 = 25 - 16 = 9; √D = 3
х1 = (5 +3) /8 = 1
х2 = (5 - 3) /8 = 1/4
Verified answer
Вот так, если есть вопросы задавай