Question

Simplify: -4x^2(3x-7)

Answer 1

The answer is:  " -12x³ + 28x² "  .
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Explanation:
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Note the "distributive property of multiplication" :
___________________________________________a(b+c) =  ab +  ac ;a(b−c) =  ab − ac ;___________________________________________
So;  given:  " - 4x² (3x - 7) " ;

 →   - 4x² (3x − 7) ;
             = [ -4x² * 3x ]  −  [- 4x² * -7 ]  ;
 
             =  -12x³ − (28x²) ;

             =  -12x³ − 28x²  .
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