Question

factorise step by step : a^2 - 4b^2 + a^3 - 8b^3 - (a - 2b)^2

Answer 1

Step-by-step explanation:

a² - 4b²+ a³ -8b²-( a-2b)²

a²- 12b² + a³ - (a² - 4ab + 4b²)

a² - 12b² + a³ - a² + 4ab - 4b²

a²+ 4ab - 16b²

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