evaluate: (1) 103^3 – 93^3 (2) 2x^2+13x+20 (by splitting the middle term)

please answer the question I mark you brainie

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1. Step-by-step explanation:

   1) 103^3-93^3

   using a^3-b^3=(a-b) (a^2+b^2+ab)

   =(103-93) (103^2+93^2+103×93)

   =(10) (10609+8649+9579)

   =(10) (28837)

   =288370

   2) 2x^2+13x+20

   2x^2+8x+5x+20

   =2x(x+4)+5(x+4)

   =(2x+5)(x+4)

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