Factor

4xy+28x+y+7

4x(y+7)+(y+7)

(y+7)(4x+1)

is that correct?

yes that's correct...Can you see where i am making a mistake in this problem.

1-125x^3

I got answer of -(5x-1)(25x^2+5x+1)

but it seems to be wrong

ok I have got the answer anyway...thanks for ur help in the other question

To factor the expression 4xy + 28x + y + 7, we need to look for common factors among the terms.

Step 1: Group the terms with common factors together.
In this case, the terms 4xy and y have a common factor of y, while the terms 28x and 7 have no common factors.

So, we can rewrite the expression as:
(4xy + y) + (28x + 7)

Step 2: Factor out the common factors.
We can factor out y from the first group, and 7 from the second group:
y(4x + 1) + 7(4x + 1)

Step 3: Notice that the expression (4x + 1) is common to both terms.
So, we can factor it out:
(4x + 1)(y + 7)

Therefore, the factored form of 4xy + 28x + y + 7 is (4x + 1)(y + 7).