Answer:
[tex]2x^2 + 2a^2[/tex]
Step-by-step explanation:
[tex](x + a)^2 + (x - a)^2[/tex]
Lets expand it.
[tex]=> x^2 + a^2 + 2ax + x^2 + a^2 - 2ax[/tex]
[tex]=> x^2 + x^2 + a^2 + a^2[/tex]
[tex]=> 2x^2 + 2a^2[/tex]
