MathematicsFactorize 72×2-10x-42.

Factorize 72x2-10x-42.


  1. A
    72x-4x-2
  2. B
    72x+4x-2
  3. C
    72x+4x+2
  4. D
    72x+4x-2 

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    Solution:

    Given,72x2-10x-42.
    Factorising, by splitting the middle term whose sum is -10 and product is -56.=72x2-14x+4x-42
    = 72xx-2+4x-2 =72x+4x-2
    Thus, factors are 72x+4x-2.
    Therefore, option 2 is  correct.
     
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