Упростите выражение (8b-8)(8b+8)-8b(8b+8)

Question

Упростите выражение (8b-8)(8b+8)-8b(8b+8)

Answer 1

((8b-8)-8b)*(8b+8)=(8b-8-8b)*8(b+1)=-8*8(x+1)=-64(x+1)

Comments

64b^2-64-64b^2-64b=-64-64b
-64-166,4=102,4

Answer 2

64b2 + 64b -64b2 - 64b -64b2 -64b = 0
-64b2 - 64b=0
-64(b2-b)=0