Question

tìm x biết -x phần 2 bằng -32 phần xai gup voi 

Answer 1

Ta có:

\(\frac{-x}{2}=\frac{-32}{x}\)

<=>-x.x=-32.2

<=>-(x^2)=-(32.2)

<=>-(x^2)=-64=-(8^2)

<=>x=8

Answer 2

       \(\frac{-x}{2}=\frac{-32}{x}\)

\(\Leftrightarrow\)\(\left(-x\right).x=\left(-32\right).2\)

\(\Leftrightarrow\)\(x^2=64\)

\(\Leftrightarrow\)\(x=\pm\sqrt{64}\)

\(\Leftrightarrow\)\(x=\pm\sqrt{8}\)

Vậy...

Answer 3

Ta có : 

\(\frac{-x}{2}=\frac{-32}{x}\)

\(\Leftrightarrow\)\(\frac{x}{-2}=\frac{-32}{x}\)

\(\Leftrightarrow\)\(x.x=\left(-32\right).\left(-2\right)\)

\(\Leftrightarrow\)\(x^2=64\)

\(\Leftrightarrow\)\(x=\sqrt{64}\)

\(\Leftrightarrow\)\(x=8\)

Vậy \(x=8\)

Answer 4

t yeeu m giang 

Answer 5

\(\frac{-x}{2}=\frac{-32}{x}\)

\(\Rightarrow-x\cdot x=-32\cdot2\)

\(\Rightarrow-x^2=-62\)

\(\Rightarrow-x^2=-8^2\)

\(\Rightarrow x=8\)