Question

Tìm x , y , z e Z biết :

a) -24/-6 = x/3 = 4/y mũ 2 = z mũ 3/-2

b) 12/-6 = x/5 = -y/3 = z/-17 = -t/-9

giúp mk với

Answer 1

a: \(\dfrac{-24}{-6}=\dfrac{x}{3}=\dfrac{4}{y^2}=\dfrac{z^3}{-2}\)

\(\Leftrightarrow\dfrac{x}{3}=\dfrac{4}{y^2}=\dfrac{z^3}{-2}=4\)

=>x=12; y²=1; z³=-8

=>x=12; \(y\in\left\{1;-1\right\}\); z=-2

b: \(\dfrac{12}{-6}=\dfrac{x}{5}=\dfrac{y}{-3}=\dfrac{z}{-17}=\dfrac{t}{9}\)

=>x/5=y/-3=z/-17=t/9=-2

=>x=-10; y=6; z=34; t=-18