Verified answer

1)
а) =(c+d)²

b) = (3x-y)²

c) = (0.1m-1)²

d) = (n³-12)²

2)

a) =(4t+z)(4t-z)

b) = (3ab+10p)(3ab-10p)

c) =(9m/10 + n/6) ( 9m/10 - n/6)

d) = (4x+y)(16x²-4xy+y²)

e) = (a-6)(a²+6a+36)