Respuesta :

KurdishPotato

Answer:

a.

Step-by-step explanation:

since the rootsvare equal we can add and subtract these expressions

[tex]4 \sqrt{7} - 3x \sqrt{7} - x \sqrt{7} = 4 \sqrt{7} - 4x \sqrt{7} [/tex]

Answer: a is correct

Step-by-step explanation:

A P E X