Question

Tìm X:\(\frac{x}{-15}=\frac{-60}{x}\)

Mk cần gấp, cảm on nhìu !!!^_^

Answer 1

x = 30 hoặc x = - 30

Answer 2

\(\frac{x}{-15}=\frac{-60}{x}\)

\(\Rightarrow x^2=-60.\left(-15\right)\)

\(\Rightarrow x^2=30^2\)hoặc \(-30^2\)

\(\Rightarrow x=30;-30\)

Answer 3

x . x = -15 . -60

x\(^2\)= 900

x\(^2\)= 30\(^2\)

Suy ra x = 30 hoặc x = - 30

Answer 4

\(\frac{x}{-15}=\frac{-60}{x}\)

=> x.x = (-15).(-60)

x² = 900

<=> 900 = 30.30 = 30² = x²

Vậy x = 30