Question

12x elevado 2resta 27x elevado al 4

Answer 1

Factorizas y resuelves:

$12x^2-27x^4=3x^2(4-9x^2)=3x^2(2-3x)(2+3x)=0 \\ \\ 3x^2=0 \\ x_{1} =0 \\ \\ 2-3x=0 \\ x_{2} =2/3 \\ \\ 2+3x=0 \\ x_{3} =-2/3$

Saludos!