A= 25 - 5t -5t +t²
= 25 - 10t + t²
B= x² -8x-8x+64
=x² -16x +64
C= 16y² -4y-4y +1
=16y² - 8y +1
D= 9x² -21x -21x +49
= 9x² -42x +49
E= 36 -54w-54w +81w²
= 36 -108w + 81w²
F= p² -2.4p -2.4p+5.76
= p² -4.8p + 5.76
G= 100q² -10q-10q +1
= 100q² -20q+1
H= 1.96x²-1.4x-1.4x+1
= 1.96x² -2.8x +1