What times what equals 108 and when addded equals 6

Working on itts i’m going to need you to me as i go along 1-5

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13

Which expression is equivalent to 64 - 9x^2?