Question

ПАМАГИТЕ УМОЛЯЮ ВАС 0_0​

Answer 1

$\displaystyle 3x^2-12=0\\ x^2-4=0\\ x^2=4\\ x=б2\\ \\2x^2+6x=0\\ 2x(x+3)=0\\ x(x+3)=0\\ x=0,x+3=0\\ x=0,x=-3\\ \\1,8x^2=0\\ x^2=0\\ x=0\\ \\(x+1)(x-2)=0\\ x+1=0,x-2=0\\ x=-1,x=2$