Which factorization is incorrect? 1) x3 + 5x2 + 4x + x2 + 5x + 4 = (x + 4) (x + 1) 2 2) 4d3 - 4d2 - 9d + 9 = (d - 1) (2d - 3) 2 3) 27h3 - 8k3 = (3h - 2k) (9h2 + 6hk + 4k2) 4) 64 - 9t2 = (8 + 3t) (8 - 3t)

The second option is the incorrect:

2) 4d3 - 4d2 - 9d + 9 = (d - 1) (2d - 3) ^2

Step-by-step explanation:

Let's check each one of the factorizations:

1) x3 + 5x2 + 4x + x2 + 5x + 4 = (x + 4) (x + 1) ^2

(x + 4) (x + 1) ^2 = (x + 4) (x2 + 2x + 1) = x3 + 6x2 + 9x + 4

x3 + 5x2 + 4x + x2 + 5x + 4 = x3 + 6x2 + 9x + 4

This one is correct.

2) 4d3 - 4d2 - 9d + 9 = (d - 1) (2d - 3) ^2

(d - 1) (2d - 3) ^2 = (d - 1) (4d2 - 12d + 9) = 4d3 - 16d2 + 21d - 9

4d3 - 4d2 - 9d + 9 = 4d3 - 16d2 + 21d - 9

This one is incorrect.

3) 27h3 - 8k3 = (3h - 2k) (9h2 + 6hk + 4k2)

(3h - 2k) (9h2 + 6hk + 4k2) = 27h3 - 8k3

This one is correct.

4) 64 - 9t2 = (8 + 3t) (8 - 3t)

(8 + 3t) (8 - 3t) = 64 - 9t2

This one is correct.

So the incorrect option is the second one.