Question

(a–b) (a² + b²) + (a + b) (a² – b²) is equal to:​

Answer 1

Answer:

2a³ - 2b³

Step-by-step explanation:

(a-b)(a²+b²)+(a+b)(a²-b²)

{(a-b)a² + (a-b)b²} + (a+b)a² - (a+b)b²

(a³-a²b +ab²-b³) + (a³+a²b -ab²-b³)

a³+a³-a²b +a²b +ab² -ab² -b³ -b³ (LIKE TERMS)

2a³- 2b³

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