Question

Factorise the following algebraic expressions by using suitable identity 2x²-18​

Answer 1

Answer:

2x²-18

= (√2x)² - (3√2)²

a²-b² = (a+b)(a-b)

= (√2x+3√2) (√2x-3√2)

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Answer 2

Answer:

2x²-18

2(x²-9)

using identity a^2-b^2 = (a+b) (a-b)

2 ( (x)^2 -(3)^2)

2(x+3) (x-3)

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