jcarmack0212 jcarmack0212
  • 15-08-2019
  • Mathematics
contestada

Solve for x: −4x − 4 = −4(x + 2)

A. 0
B. −4
C. All real numbers
D. No solution

Respuesta :

r3t40
r3t40 r3t40
  • 15-08-2019

[tex]

-4x-4=-4(x+2) \\

-4x-4=-4x-8 \\

-4\neq-8\Longrightarrow x\notin\mathbb{R}

[/tex]

The answer is D. No solution because we got false equivalency.

Hope this helps.

r3t40

Answer Link
jimrgrant1 jimrgrant1
  • 15-08-2019

Answer:

D

Step-by-step explanation:

Given

- 4x - 4 = - 4(x + 2) ← distribute right side

- 4x - 4 = - 4x - 8 ( add 4 to both sides )

- 4x = - 4x - 4 ( add 4x to both sides )

0 = - 4 ← not possible

Hence the equation has no solution → D

Answer Link

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