Seudónimo Seudónimo
  • 13-07-2017
  • Mathematics
contestada

Need help!! Don't understand algebra.
I need help figuring out 18x2 + 9x - 20

Respuesta :

Аноним Аноним
  • 13-07-2017
The answer is (6x-5)(3x+4)

Write 9x as a sum or difference.
18x^2+24x-15x-20
Factor out 6x from the expression.
18x^2+24x
Factor out -5 from the expression.
-15x-20
Factor out 3x+4 from the expression. 
6x(3x+4)-5(3x+4). 

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