l4ipear9tynidentle l4ipear9tynidentle 26-04-2016 Mathematics contestada Factor completely −7x2 + 14x − 21. −1(x2 − 14x + 21) −7x(x2 − 2x + 3) −7(x2 + 2x − 3) −7(x2 − 2x + 3)
