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\(y=\frac{1}{x^2+\sqrt{x}}\)

a: \(\dfrac{-4}{8}=\dfrac{x}{-10}=\dfrac{-7}{y}=\dfrac{z}{-24}\)

=>\(\dfrac{x}{-10}=\dfrac{-7}{y}=\dfrac{z}{-24}=\dfrac{-1}{2}\)

=>\(\left\{{}\begin{matrix}x=\left(-10\right)\cdot\dfrac{\left(-1\right)}{2}=5\\y=\dfrac{-7\cdot2}{-1}=14\\z=\dfrac{-24\cdot\left(-1\right)}{2}=\dfrac{24}{2}=12\end{matrix}\right.\)

b: \(\dfrac{-3}{6}=\dfrac{x}{-2}=\dfrac{-18}{y}=\dfrac{-z}{24}\)

=>\(\dfrac{x}{-2}=\dfrac{-18}{y}=\dfrac{z}{-24}=\dfrac{-1}{2}\)

=>\(\dfrac{x}{2}=\dfrac{18}{y}=\dfrac{z}{24}=\dfrac{1}{2}\)

=>\(x=2\cdot\dfrac{1}{2}=1;y=18\cdot\dfrac{2}{1}=36;z=\dfrac{24}{2}=12\)

x=5, y=49, z=12

\(-\frac{4}{8}=-\frac{1}{2}=\frac{5}{-10}=\frac{x}{-10}=-\frac{7}{14}=-\frac{7}{y}=\frac{12}{-24}=\frac{z}{-24}\)

=> x = 5; y = 14; z = 12.

chỉ có choa học giỏi

$-\frac{4}{8}=-\frac{1}{2}=\frac{5}{-10}=\frac{x}{-10}=-\frac{7}{14}=-\frac{7}{y}=\frac{12}{-24}=\frac{z}{-24}$

khó       ghê

-4/8=-12/24=z/24. Suy ra z=-12

-4/8=-1/2=5/-10=x/-10. Suy ra x=5

-4/8=-1/2=-7/14=-7/y. Suy ra y=14

Ủng hộ mk nha

-4/8=-12/24=z/24. Suy ra z=-12

-4/8=-1/2=5/-10=x/-10. Suy ra x=5

-4/8=-1/2=-7/14=-7/y. Suy ra y=14

Ủng hộ mk nha, mãi chưa đc nào cả !!

\(\frac{-4}{8}=\frac{x}{-10}\Leftrightarrow\left(-4\right).\left(-10\right)=8.x\Rightarrow x=\frac{\left(-4\right).\left(-10\right)}{8}=\frac{40}{8}=5\)

\(\frac{5}{-10}=\frac{-7}{y}\Leftrightarrow5.y=\left(-10\right)\left(-7\right)\Rightarrow y=\frac{\left(-10\right).\left(-7\right)}{5}=\frac{70}{5}=14\)

\(\frac{-7}{14}=\frac{z}{-24}\Leftrightarrow\left(-7\right).\left(-24\right)=14.z\Rightarrow z=\frac{\left(-7\right).\left(-24\right)}{14}=\frac{168}{14}=12\)

Vậy x = 5 ; y = 14 ; z = 12

\(\frac{-4}{8}=\frac{x}{-10}=\frac{-7}{y}=\frac{z}{-24}\)

\(\frac{-4}{8}=\frac{x}{-10}\)=> ( -4 ) . ( -10 ) = 8x => 40 = 8x => x = 5

\(\frac{5}{10}=\frac{-7}{y}\)=> 5y = 10 . ( -7 ) => 5y = -70 => y = -14

\(\frac{-7}{-14}=\frac{z}{-24}\)=> ( -7 ) . ( -24 ) = -14z => 168 = -14z => z = -12

@Quỳnh , dấu sai kìa.

\(\frac{-4}{8}=\frac{x}{-10}=\frac{-7}{y}=\frac{z}{-24}\)

Xét : \(\frac{-4}{8}=\frac{x}{-10}\Leftrightarrow40=8x\Leftrightarrow x=5\)

Xét : \(\frac{-7}{y}=\frac{-4}{8}\Leftrightarrow-56=-4y\Leftrightarrow y=14\)

Xét : \(\frac{-4}{8}=\frac{z}{-24}\Leftrightarrow96=8z\Leftrightarrow z=12\)

x=\(\dfrac{-4.\left(-10\right)}{8}=5\).

y=\(\dfrac{-10.\left(-7\right)}{5}=14.\)

z=\(\dfrac{-7.\left(-24\right)}{14}=12.\)

x = 5

y = 14

z = 12