Решите уравнения 4х^{2}-5х=0: [tex] \frac{4}{5} x^{2} -45=0[/tex] 5x^{2} +7х+4=0. Created by mageyeva. algebra-ru

tex] 5x^{2} +7х+4=0...

mageyeva @mageyeva

July 2022 1 5 Report

Решите уравнения 4х^{2}-5х=0:
[tex] \frac{4}{5} x^{2} -45=0[/tex]
5x^{2} +7х+4=0

Answers & Comments

NNNLLL54

Verified answer

$\frac{4}{5}x^2-45=0\; |\cdot 5\\\\4x^2-225=0\\\\(2x-15)(2x+15)=0\\\\x_1=\frac{15}{2}=7,5\; ;\; x_2=-\frac{15}{2}=-7,5\\\\\\5x^2+7x+4=0\\\\D=49-80=-31\ \textless \ 0\; \; \Rightarrow \; \; x\in \varnothing$

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Answers & Comments

Verified answer

najdite perimetr pryamougolnogo uchastka zemli ploshad kotorogo ravna 108300 metr

sostavte geneticheskij ryad sasol

chto bylo sdelano nikolaem i dlya ukrepleniya kodifikacii i gosudarstvennogo appara

reshite zadachu v molyah dano mfe2o3480kg najtivh2 nh2o

sostavte formuly himicheskih veshestv fosfat kaliyanitrat natriya oksid azota iv

kakoe kolichestvo veshestva i skolko strukturnyh chastic soderzhit 684g sulfata al

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