Question

Answer 1

Answer 2

\(\left(x-2\right)^2=\dfrac{9}{25}->\left(x-2\right)^2=\left(\dfrac{3}{5}\right)^2\)

\(->x-2=\dfrac{3}{5}->x=\dfrac{3}{5}+2=\dfrac{13}{5}\)

Answer 3

(x - 2)² = 9/25

x - 2 = 3/5 hoặc x - 2 = -3/5

*) x - 2 = 3/5

x = 3/5 + 2

x = 13/5

*) x - 2 = -3/5

x = -3/5 + 2

x = 7/5

Vậy x = 13/5; x = 7/5