He probably won't get too suspicious if you get 100% on three quizzes when you regularly get A's in that class. Â A ninety-something percent jump to a 100 is less than a 10-point increase. Â
That being said, it's still best to learn the math so that you don't become dependent on using Brainly for every question. Â Maybe only use it when you're having a lot of trouble with a particular problem or concept; but some of the explanations on here are actually really helpful in teaching things.