What are the roots of the equation 2x2 + 3x+4= 0?

The amount of energy it takes to lift a box might be a function of which of the following

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

Find the value of x. round the length to the nearest tenth