For all the questions multiply the base numbers, if there are any. And add the exponent numbers. For example if the question is, (x^2)(x^4) add 2 and 4 to get 6. If there is more than one letter only add the like exponents with the same letter. For example, (x^2 y^2)(x^4 y^3) add 2+4=6 and 2+3=5, which means the final answer would be x^6 y^5