Please help with the following algebreic expressions?

Question

Factor: 7(3x+2)^2 multiplied by (1-x)^2 + (3x+2)(1-x)^2 (Take out GCF)

Factor x^4 - 4x^3 + x^2 - 4x

Answer 1

The first one is ((1 - x)^2))[7(3x + 2)^2][1 + (3x + 2)] =
3((1 - x)^2)[7(3x + 2)^2](x + 1).

The second is x(x - 4)(x^2 + 1).

Answer 2

(3x+2)(1-x)^2 [ 7(3x+2) +1]
x(x^2 +1)(x-4)
factor by grouping x^3(x-4) + x(x-4)=(x-4)(x^3 +x)
x(x-4)(x^2 +1)