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  • 09-07-2017
  • Mathematics
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find (2x^2-4)-(5x^2+2)+(7x^2-5)

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JoshEast
JoshEast JoshEast
  • 09-07-2017
( 2x² - 4) - ( 5x² + 2 ) + ( 7x² - 5)   = ( 2x² - 4 -  5x² - 2  +  7x² - 5)
                                                     
                                                     =  (2x² -  5x² +  7x²  - 4 - 2  - 5)

                                                     =  4x² - 11
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