IELTS writing Task 2

[i_o_r_h_a_e_l]

Hi! I wonder if someone can tell me the principles of the writing for Task 2 IELTS if it asks test takers the following:

To what extent do you agree or disagree?

Should the answer includes both sides, or just states if they agree/disagree and give their reasons/support their argument?

Thank you so much!