Question

Can you solve this for me by: 

Answer 1

$2a^2-32$

$2*a^2-2*16$

$2*(a^2-16)$

but we have a Difference of two square

$x^2-y^2=(x+y)*(x-y)$

now you can see it very well

$2*(a^2-4^2)$

so

$\boxed{\boxed{2*(a-4)*(a+4)}}$