Решить уравнение (2x − 5)(x + 3) = 7x + 21. Created by es730007. algebra-ru

Решить уравнение (2x − 5)(x + 3) = 7x + 21...

July 2022 1 2 Report

Решить уравнение (2x − 5)(x + 3) = 7x + 21

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alma86 [tex]2 {x}^{2} + 6x - 5x - 15 = 7x + 21 \\ 2 {x}^{2} - 6x -36 = 0( \div 2 \\ {x}^{2} - 3x - 18 = 0 \\ d = 9 +72 = 81
x1=6+9/2=7,5
x2=6-9/2=-1,5

1 votes Thanks 0

baukowacpadnqg ошибка = d = 9 - 4 * 1 * (-18) = 9 + 72 = 81 = 9

baukowacpadnqg - 15 + (- 21) = - 36 - 36 / 2 = - 18

baukowacpadnqg + 21 gthtyjcbncz c vbyecjv - 21

baukowacpadnqg переносится с минусом (ой)

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Answers & Comments

zadanie 2 raspredelite slova v kolonki tablicy napisanie narechij slitnoe raz

zadanie 1 vynesti obshij mnozhitel 4rh u r3u h

postrojte grafik pryamoj proporcionalnosti prohodyashij cherez tochku 2 6 chemu8096ca8e717b6763bc47cc63a15608a8 10813

tochki a b i c lezhat na odnoj pryamoj a tochka d ne lezhit na pryamoj ac skolko

ustanovite posledovatelnost poyavleniya v processe evolyucii osnovnyh grupp zhivot677c9066f096abb648407a69ef41e2b4 26568

najdi korni uravneniya 2x154x1525c63250561bf43e8da230d21f2da27c 39843

reshi uravnenie 9112 196m 1591236m

dayu 88 balov 3 kakie obshie tendencii mozhno otmetit v razvitii vostochnyh gosud

glavnaya prichina zakrytiya kitaya 1stremlenie sohranit tradicionnye ustoi obsh

na paneli formatirovaniya nahodyatsya instrumenty 1 vstavit 2kopirovat 3soz

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