MATH TEACHER; KID; HOW TO USE Y=3X+(3X)²; MATH TEACHER; LEARNING HOW TO PAY TAXES AND STUFF LIKE THAT WOULD BE USEFUL; MATH TEACHER; KID; HOW TO USE Y=(6X-8X)³ = Y=(8X+6X)³; BUT I NEED TO NOW HOW TO DEAL WITH STRESS; MATH TEACHER; LEARN THE FORMULA OF PYTHAGORAS!!!