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Mathematics

x2 + 2(5x + 12) in the form of factors is :

  1. (x - 6)(x + 4)

  2. (x - 6)(x - 4)

  3. (x + 6)(x + 4)

  4. (x + 6)(x - 4)

Factorisation

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Answer

Given,

   x2 + 2(5x + 12)

= x2 + 10x + 24

= x2 + 6x + 4x + 24

= x(x + 6) + 4(x + 6)

= (x + 4)(x + 6).

Hence, Option 3 is the correct option.

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