a) -a7b7 = -(ab)7
в) 0,25x2y2z2 = (0.5xyz)2
д) 81p8q16 = (3p2q4)4
ж) a6b4a2b4 = a8b8 = (ab)8
и) -27m6q8r9q4 = -27m6q12r9 = -(3m2q4r3)3
б) 49m2n2 = (7mn)2
г) -125p3q3r3 = -(5pqr)3
e) 16x8y4z12 = (2x2yz3)4
з) 32m4d3d2m = 32m5d5 = (2m*d)5
к) -т12n8k18n7 = -m12n15k18 = -(m4n5k6)3
Ответ: смотри выше.