emilyanita06
emilyanita06 emilyanita06
  • 04-04-2020
  • Mathematics
contestada

Please help!!! 2x²-5x-12 (quadratic equations)
Explain your work and describe the solution. I really appreciate it!

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 04-04-2020

Answer:

( 2x +3  ) (x-4    )

Step-by-step explanation:

2x²-5x-12

Factor

( 2x   ) (x    )

We need to look at the factors of -12

-1 *12   -2 *6   -3*4  -4*3  -6*2  -12*1

What multiplies 2 * 1st factor + the other factor to equal -5

2* -4 +3 = -8+3 =5

so the -4 goes on the outside and the 3 goes on the inside

( 2x +3  ) (x-4    )

Answer Link
amna04352
amna04352 amna04352
  • 07-05-2020

Answer:

(2x + 3)(x - 4)

Step-by-step explanation:

2x² - 5x - 12

2x² - 8x + 3x - 12

2x(x - 4) + 3(x - 4)

(2x + 3)(x - 4)

Answer Link

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