lucky7771
lucky7771 lucky7771
  • 14-08-2019
  • Mathematics
contestada

Please help me with this question. It’s urgent

Please help me with this question Its urgent class=

Respuesta :

jimrgrant1 jimrgrant1
  • 14-08-2019

Answer:

(0, - 4 )

Step-by-step explanation:

Given f(x) = g(x), then

- 2[tex]\sqrt{3x+4}[/tex] = - 2[tex]\sqrt{x+4}[/tex] ( divide both sides by - 2 )

[tex]\sqrt{3x+4}[/tex] = [tex]\sqrt{x+4}[/tex]

Square both sides

3x + 4 = x + 4 ( subtract x from both sides )

2x + 4 = 4 ( subtract 4 from both sides )

2x = 0 ⇒ x = 0

Substitute x = 0 into either of the 2 functions to find y

g( 0 ) = - 2[tex]\sqrt{0+4}[/tex] = - 2[tex]\sqrt{4}[/tex] = - 2 × 2 = - 4

Solution is (0, - 4 )

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