我不明白他犯了这样的错误的英文

i wonder why he’s made such a mistake this time

• 我:    I; my; me
• 不明:    not clear; unknown
• 白:    white
• 他:    he
• 犯:    go against; offend ...
• 了:    finish; complete; ...
• 这样:    so; such; like thi ...
• 的:    4次方是 The fourth po ...
• 错误:    wrong; mistaken; i ...