Factor completely by filling the blanks. 1) 4 + 4 = _____( + ) 2) + − = _____( + − ) 3) 6 + 2 2 − 8 3 = _____(3 + − 4 2 ) 4) −12 2 + 9 = −3(_______) 5) 3 3 + 2 2 2 − 6 2 = 2(_______)​