rozwiąż uklad równań y=x2+4x y=-2x+3

y=2x+4x y=-2x+3 y=6x y+2x=3 y-6x=0 |*(-1) y+2x=3 -y+6x=0 y+2x=3 _________________ 8x=3 |:8 x=3/8 y-6x=0 y-6*3/8=0 y-9/4=0 y=9/4 y=2 1/4 x=3/8

y=x2+4x y=-2x+3 y=6x 6x=-2x+3 y=6x 8x=3 /:8 y=6x x=3/8 y=18/8 x=3/8