9x + 3 + 7x + 4
Anyone down to help?

Use the quadratic formula to solve 5x=6x^2-3,what are the values of x?

The area of a 25-inch tv screen is 300 square inches. the area of a 40-inch tv screen is 768 square inches. the are of the smaller screen is what percent of the area of the larger screen?

What is the standard form of -5x^2+2x^4-11+x^3+3x