Sūtra 15 of 16

Guṇitasamuccayaḥ

The product of the sum of coefficients

Verification of polynomial multiplication.

When to use

Checking a polynomial product is correct.

How it works

Sum of coefficients of the product = (sum of coefficients of factor 1) × (sum of coefficients of factor 2).

Memory formula

Check products: sum(coefficients of product) = product of sums of factors.

Worked examples

Problem 1

Check (x + 2)(x + 3) = x² + 5x + 6

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