X²-7|x|+12=0 pomogite pls

A)/x/=x, xˇ2-7x+12=0, (x-4)(x-3)=0, x1=4,x2=3 b)/x/=-x, xˇ2+7x+12, (x+3)(x+4)=0, x3=-3,x4=-4