3x to the 3rd power plus 5x to the fifth power

2 answers

3x to the 3rd power = 3x^3
5x to the fifth power = 5x^5

3x to the 3rd power plus 5x to the fifth power = 3x^3 + 5x^5
3X^3 + 5x^5 = x^3(3 + 5x^2).