Question

Tìm x, y, z biết

x×y=3/5 ; y×z=4/5; z×x=3/4

Answer 1

\(x\times y=\frac{3}{5}\)

\(y\times z=\frac{4}{5}\)

\(z\times x=\frac{3}{4}\)

\(x\times y\times y\times z\times z\times x=\frac{3}{5}\times\frac{4}{5}\times\frac{3}{4}\)

\(x^2\times y^2\times z^2=\frac{9}{25}\)

\(\left(x\times y\times z\right)^2=\left(\pm\frac{3}{5}\right)^2\)

\(x\times y\times z=\pm\frac{3}{5}\)

TH1:

\(x\times y\times z=\frac{3}{5}\)

TH2:

\(x\times y\times z=-\frac{3}{5}\)

Đến đây bn tự làm típ nha, chúc bn học tốt ^^