1)y=0 0,5x^2-3=00.5x^2=3x^2=6x=√6(√6;0)2)y=00.5(x+2)^2=00.5(x²+4x+4)=00.5x²+2x+2=0D=b²-4ac=2²-4×0.5×2=4-4=0, D=0x=-b/2a=-2/1=-2, x=-2(-2;0)3)y=0-0.5(x-3)²+2=0-0.5(x²-6x+9)+2=0-0.5x²+3x-4.5+2=00.5x²-3x+2.5=0D=b²-4ac=9-5=4 D>0x1=-b-√D/2a=-3-2/1=-5x2=-b+√D/2a=-3+2/1=-1(-5;0) и (-1;0)4)y=00.5(x²+4x+4)=00.5x²+2x+2=0D=b²-4ac=4-4=0, D=0x=-b/2a=-2/1=-2(-2;0) вроде так :)