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robben22
@robben22
July 2022
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Квадратный трёхчлен разложен на множители: 4x^2 -29x + 45=4 (x-5) (x-a).
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ане4ка1996
4х^2 - 29х +45= 4( х^2-5х-ах+5а)
4х^2 - 29х +45= 4х^2 -20х - 4ах +20а
-29х+45+20х=-4ах+20а
-4ах+20а=45-9х
4а(-х+5)=9*(5-х)
4а(5-х)=9*(5-х)
4а=9
а=9/4
а=2,25
2 votes
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Answers & Comments
4х^2 - 29х +45= 4х^2 -20х - 4ах +20а
-29х+45+20х=-4ах+20а
-4ах+20а=45-9х
4а(-х+5)=9*(5-х)
4а(5-х)=9*(5-х)
4а=9
а=9/4
а=2,25