(x+2)((x+4)-(x-3)(7+3x)=0
x²+4x+2x+8-7x+3x²-21-9x=0
4x²-10x=13
x(4x-10)=13
x=13 4x-10=13
4x=23
x=5,75
(x+2)((x+4)-(x-3)(7+3x)=0
x²+4x+2x+8-7x+3x²-21-9x=0
4x²-10x=13
x(4x-10)=13
x=13 4x-10=13
4x=23
x=5,75