Answer: 5(4x² + 4x + 1)
Assuming it wants us to simplify it:
Find the common multiple all the numbers have. You can see both 20s have an x but 5 doesnt, so we cannot take that out. However, 5 and 20 are in the 5 times table, So we can take that out and put it outside a bracket.
You then divide 20x², 20x and 5 by 5, which gives us:
5(4x²+4+1)
Since this cannot be simplified any further, this is the answer.
Assuming it wanted us to factorise this.