haleywillaert haleywillaert
  • 01-03-2019
  • Mathematics
contestada

Factor 2x^2-4x-30 completely. A. 2(x-5)(x+3) B. (2x-5)(x+3) C. (2x+3)(x-5) D. 2(x-3)(x+5)

Respuesta :

gmany
gmany gmany
  • 01-03-2019

Answer:

2(x - 5)(x + 3)

Step-by-step explanation:

[tex]2x^2-4x-30\\\\=2\cdot x^2-2\cdot2x-2\cdot15\\\\=2(x^2-2x-15)\\\\=2(x^2+3x-5x-15)\\\\=2[x(x+3)-5(x+3)]\\\\=2(x+3)(x-5)[/tex]

Answer Link

Otras preguntas

Type N over each noun, V over each verb or verb part, and P over each pronoun. ___ ____ __ ___ ___ _ ___ ____ __ ____ ____ The hou
how do we know the sun rotate
What allows scientists to predict future climate change with some sense of accuracy?
What will happen if a fluid is heated?
Type N over each noun, V over each verb or verb part, and P over each pronoun. ___ ____ __ ___ ___ _ ___ ____ __ ____ ____ The hou
Victor owns a highly successful bakery and coffee shop, Mocha & Muffins. Others have expressed interest in starting nearly identical shops at various locati
how many syllables does coincide have​
you market many different types
in the scientific method, before conducting any experiments, it is necessary to . .
[tex] - 5(5 \ \frac{1}{4} + 0.2) + 20[/tex]​