WEBVTT

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Here is the problem: 2(x plus 3) plus 4.

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Simplify the polynomial expression in x.

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Read the expression.

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Distribute (multiply out every product). Each term in one factor multiplies each term in the other: a(b plus c) equals ab plus ac.

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Result after multiplying out.

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Combine like terms. constants: 6 plus 4 equals 10. Like terms have identical variables and exponents, so only their coefficients are added.

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Write the result in standard form. Terms are ordered by descending total degree.

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So the answer is 2x plus 10.

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After expanding and combining like terms the expression is 2x plus 10, a polynomial of degree 1 with 2 terms.

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Spot check at x equals 0.73: original 11.46, simplified 11.46, which checks out.