mcroyalmichael mcroyalmichael Today at 3:53 AM Mathematics Answered I need help with finding the sum of (x^4 + 2x^3 - 7x - 9) + (x^5 - 2x^4 + 8x + 18) in standerd formmy answer is x^5 - x^4 + 2x^3 + x^2 + 9is this correct