Learn how to combine two trinomials by alligning vertically

The video tutorial explains how to add and subtract polynomials by focusing on like terms. It emphasizes the importance of ensuring that the monomials have the same variable factors to be considered like terms. Once identified, like terms can be combined by adding their coefficients while keeping the variable part unchanged. An example is provided to illustrate the process, showing how 5X^2 and 2X^2 are combined to form 7X^2.

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