faith2288g faith2288g
  • 03-08-2020
  • Mathematics
contestada

Solve the equation by completing the square.

3x^2-12x=96

Respuesta :

adioabiola
adioabiola adioabiola
  • 08-08-2020

Answer:

x = 8

or

x = -4

Step-by-step explanation:

3x² - 12x = 96

Divide both sides by 3

x² - 4x = 32

Add 4 to both sides

x² - 4x + 4 = 32 + 4

(x - 2)² = 6²

Find the square root of both sides

√(x - 2)² = √6²

x - 2 = +/- 6

x - 2 = +6 or -6

x - 2=+6

x=6+2

x=8

x - 2=-6

x=-6+2

x=-4

x = 8

or

x = -4

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