Idk how to math pls help i need more characters

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

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)