Resuelve aplicando la formula general 4x²+8x+3=0

2y²-5y-3=0

3x²+4x+1=0

x²-2x-2=0

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.