Theoretically, it is possible, but the reference answers of the marking teacher are all made by the method of high school, and graded according to the steps; If you do it in a college way, the whole team will do well. If you are wrong, there will be no step marks. So, as long as you really can't figure out how to do it in high school, don't use the college method.

Moreover, the application of university theorems and formulas. At least it must be explained, because it is no longer within the scope of high school curriculum.