Question

factorise 2a²-18. PLEASE solve...​

Answer 1

Step-by-step explanation:

2a²-18

2(a²-9)

2(a²-3²)

2(a+3)(a-3)

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Answer 2

Answer:

2(a2 - 9 )

2 ( a2- 3 ^2)

2 ( a + 3 ) ( a - 3) ( using identity )