Question

Hey smart people please help me with my math

(who doesn't know Latvian here is translation on what's asked: Division into square trinomial multipliers (if possible))​
y'all don't have to do all the work just one or two will be perfect please please please help me​

Answer 1

a) (x+2)(x-1)

b) (x+1)(x+3)

c) (x-2)(x-4)

f) not factorable

g) (a-8)(a-2)

h) (m-9)(m+5)