What is vertex?? Where is it found??

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b