a(a-2)(a+2)= a(a2-4)= a3-4a
(c-d)(c+d)(c2+d2)= (c2-d2)(c2+d2)= c4-d4
-3(x+3)(x-3)=-3(x2-9)=-3x2+27
7b2(b+4)(4-b)= 7b2(16-b2)= 112b2-7b4
(2a-1)(2a+1)(4a2+1)= (4a2-1)(4a2+1)= 16a4-1
(c3-5)(c3+5)(c6+25)= (c6-25)(c6+25)= c12-625
a(a-2)(a+2)= a(a2-4)= a3-4a
(c-d)(c+d)(c2+d2)= (c2-d2)(c2+d2)= c4-d4
-3(x+3)(x-3)=-3(x2-9)=-3x2+27
7b2(b+4)(4-b)= 7b2(16-b2)= 112b2-7b4
(2a-1)(2a+1)(4a2+1)= (4a2-1)(4a2+1)= 16a4-1
(c3-5)(c3+5)(c6+25)= (c6-25)(c6+25)= c12-625