Question

(x – 3)^3 – x^2 (x – 9) = 0.

Answer 1

tìm x trình bày ra lun

Answer 2

\(\Leftrightarrow x^3-9x^2+27x-27-x^3+9x^2=0\)

\(\Leftrightarrow x=1\)

Answer 3

\(\left(x-3\right)^3-x^2\left(x-9\right)=0\\ \Rightarrow x^3-9x^2+27x-27-x^3+9x^2=0\\ \Rightarrow27x-27=0\\ \Rightarrow27\left(x-1\right)=0\\ \Rightarrow x=1\)