lexiis151
lexiis151 lexiis151
  • 23-03-2018
  • Mathematics
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how solve it by using FOIL (4x^2-3x+2)(2x+5)

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Аноним Аноним
  • 23-03-2018
(4x^2-3x+2)(2x+5) 
(4x^2)(2x+5) + (-3x)(2x+5) + (2)(2x+5)  

(4x^2)(2x+5) = 8x^3 + 45x^2
(-3x)(2x+5) = -6x^2 - 15x 
(2)(2x+5) = 4x + 10

8x^3 + 45x^2 -6x^2 - 15x + 4x + 10
39x^2 + 8x^3 - 9x + 10 <-------------------------Answer

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oceanebucaille oceanebucaille
  • 23-03-2018
8x^3 + 14x^2 - 11x +10
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