select

    *

from

    homework

where

    (id between 1 and 10 or id between 50 and 70)

    and complete = 1

    and (title like 'a%' or title like 'b%');

$homeworks = Homework::where(function ($query) {

    $query->whereBetween('id', [1, 10])

          ->orWhereBetween('id', [50, 70]);

})->where('complete', 1)

->where(function ($query) {

    $query->where('title', 'like', 'a%')

          ->orWhere('title', 'like', 'b%');

})->get();