Question

Factorise the following
2a^2-128a

Answer 1

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$\underline\color{Green}{FACTORISTION}$

2{(a)²-(8)²}

=2(a-8)(a+8)

so simple break it into a²-b²

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Answer 2

Answer:

2 (a^2-64a)

2 {(a)^2-(8a^1/2)}

2 (a-8a^1/2)(a+8a^1/2)