Помогите Пожалуйста решить !! 480. Created by lora1306. algebra-ru

Ответ:Объяснение:4 * (х² + 2х) = 6х + 64х² + 8х - 6х - 6 = 04х² + 2х - 6 = 0D = b² - 4ac = 2² -4 * 4 * (- 6) = 4 + 96 = 100х₁ = x₂ =

Помогите Пожалуйста решить !! 480...

lora1306 @lora1306

July 2022 1 5 Report

Помогите Пожалуйста решить !! 480

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fanta2310

Verified answer

Ответ:

Объяснение:

$\frac{3}{x}+\frac{3}{x+2}=4$

$\frac{3 * (x+2)+3*x}{x*(x+2)}$

$\frac{3x+6+3x}{x^{2}+2x }=4$

$\frac{6x+6}{x^{2}+2x }=4$

4 * (х² + 2х) = 6х + 6

4х² + 8х - 6х - 6 = 0

4х² + 2х - 6 = 0

D = b² - 4ac = 2² -4 * 4 * (- 6) = 4 + 96 = 100

х₁ = $\frac{-b+\sqrt{D} }{2a} = \frac{-2+\sqrt{100} }{2*4} =\frac{-2+10}{8}=1$

x₂ = $\frac{-b-\sqrt{D} }{2a}=\frac{-2-\sqrt{100} }{2*4}=\frac{-2-10}{8}=\frac{-12}{8}=-\frac{3}{2}=-1,5$

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rebyata anglijskij uprazhnenie1

v koshelke lezhalo 3 monety po 5 rublej i 6 kupyur po 10 rublejskolko vsego dene357574004552b9a608979db4705f5e92 44395

dlina pryamougolnika abcd ravna 17sm a shirina na sm menshenajdi perimitr pryam

ili 6 otvet chisla zapisyvaj v poryadke vozrastaniya mezhdu chislami ne ostavlyajd6390e3122903147c414a26742095566 75014

pomogite pozhalujsta 48 balov

rebyata 2 zadanie anglijskij

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rebyata pozhalujsta 1variant nomer 3

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