The phrase "a complicated task requiring" is correct and usable in written English.
You can use it when describing a task that is complex and demands specific skills or resources to complete.
Example: "Completing the project on time is a complicated task requiring careful planning and coordination among team members."
Alternatives: "a challenging task that needs" or "a complex task that demands".
Modular fixture configuration design is a complicated task requiring strong professional background and practical experience.
Estimating how many people have come to or are planning a visit to New York City is always a complicated task, requiring a combination of data from a travel research consulting firm, D. K. Shifflet & Associates, and the federal government.
These savvy veterans (many of whom are in this study) have firmly planted themselves at the right hand of the CEO for many years and they have become increasingly valuable assets for some very large companies". Being a CMO is a complicated task, requiring a diverse set of skills, said Tony Pace, global CMO of Subway FAF, who has held his job for 72 months.
Effective nutritional balance could be a complicated task requiring the cooperation of nutritionists and dieticians.
The second was a more complicated task, requiring longer periods of concentration, but the reward was two sugar cubes.
But for farmers who grow a diverse array of crops, as many small and organic farms do, enrollment can be an onerous and complicated task requiring them to apply for a dozen or more separate policies.
After assembling the machine, a complicated task that required a knowledge of soldering, he and his 6-year-old son managed to print a bottle opener.
Explaining the model in-depth is a complicated task and requires reading the foundation's publications on the issue – concisely outlined by a Foreign Affairs article from October titled A Westphalian Peace for the Middle East Why an Old Framework Could Work.
This is admittedly a complicated task as it requires both research and implementation projects.
However, any formal evaluation is a complicated task since it requires the ground truth maps for a complex enough dataset.
The related calculation remains a complicated task to perform and requires enormous computing time.
