A=(4x+1)²-3x(4x+1)+(4x+1)(5x-5)
A=(4x+1)[(4x+1)-3x+(5x-5)]
A=(4x+1)(6x-4)
B=6a-9-(2a-3)²+(2a-3)(2a+3)
B=3(2a-3)-(2a-3)²+(2a-3)(2a+3)
B=(2a-3)[3-(2a-3)+(2a+3)]
B=(2a-3)9=9(2a-3)
C=49b²-28b+4+(4b+3)(7b-2)+7b-2
C=(7b-2)²+(4b+3)(7b-2)+7b-2
C=(7b-2)[(7b-2)+(4b-3)+1]
C=(7b-2)(11b-4)
D=4(w+1)(3w-7)-w-1+(w+1)²
D=(w+1)[4(3w-7)-1+(w+1)]
D=(w+1)(13w-28)
E=64-(2y+1)²
E=(8+2y+1)(8-2y-1)
E=(2y+9)(7-2y)