Practice problem
Which of the following expressions can be simplified?
2x2+9x2x^2 + 9x2x2+9x
4x3+3x44x^3 + 3x^44x3+3x4
4x3+2x34x^3 + 2x^34x3+2x3
x1/2+2x3/2x^{1/2} + 2x^{3/2}x1/2+2x3/2
Type a concept, like “slope” or “photosynthesis”.
