A = 4x²+26x+12

B=9t-2z-14

C= 25x-1

D= 30-32x+14x²

E=25x²+1+10x

F=12-8t-7t²

G=5(x+3)

H= 3(x²-7)

I= 4x(x+3)

J=(x+4)(x-4)

K= (5-6x)(5+6x)

L=(7t-10)(7t+10)