Find the Product (7p⁴ + q)(49p⁸ − 7p⁴q + q²)

Find the Product:

\[ (7p^4 + q)(49p^8 – 7p^4q + q^2) \]

Solution:

Using identity:

\[ (a+b)(a^2-ab+b^2)=a^3+b^3 \]

Here, \[ a=7p^4,\qquad b=q \]

\[ (7p^4 + q)(49p^8 – 7p^4q + q^2) \]

\[ = (7p^4 + q)\left[(7p^4)^2 – (7p^4)(q) + q^2\right] \]

\[ = (7p^4)^3 + q^3 \]

\[ = 343p^{12} + q^3 \]

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