angel12322 angel12322
  • 01-10-2017
  • Mathematics
contestada

if (2x-3) and (x+5) are multiplied to form the trinomial ax^2 +bx+c, what is the value of b

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texaschic101
texaschic101 texaschic101
  • 01-10-2017
(x + 5)(2x - 3) =
x(2x - 3) + 5(2x - 3) =
2x^2 - 3x + 10x - 15 =
2x^2 + 7x - 15........so b = 7 <==
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Аноним Аноним
  • 01-10-2017
b will be -3 + 2*5  = 7
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