jewelbookers
jewelbookers jewelbookers
  • 21-02-2020
  • Mathematics
contestada

Algebra Solve for x? use the quadratic formula
3X2-2x-20=-4

Respuesta :

Onoriodefelix
Onoriodefelix Onoriodefelix
  • 21-02-2020

Answer:

x = -5

Step-by-step explanation:

Given 3X2 -2x -20 = -4

6 - 2x - 20 = -4

Collect like terms .

-4 crossses the sign of equality and becomes +4 same also for -2x which changes to +2x

That’s 6 + 4 -20 = 2x

10 - 20 = 2x

-10 = 2x

Divide both sides by 2

-10/2 = 2x /2

-5 = x

x = -5

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