Identify like terms in the expression. Add or subtract the coefficients of like terms. Rewrite the expression with combined terms. Simplify 4x+5−2x+3. Combine the like terms (4x and −2x): 4x−2x=2x. Combine constants (5 and 3; 5 + 3 = 8).

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An example of a polynomial of a single indeterminate x is x − 4x + 7. An example with three indeterminates is x + 2xyz − yz + 1.

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