Question

( 8b-8) (8b+8) - 8B ( 8b+8) ПРИ b =2.6 плиз

Answer 1

$(8b)^{2} - 8 ^{2} -(64b ^{2} +64b)=64b ^{2} -64-64 b^{2} -64b=-64-64b$-
если b=2.6,то $-64-(64*2.6)=166.4= -64-166.4=-(64+166.4)=-230.4$

Answer 2

это точно правильно?

Answer 3

да

Answer 4

(8b+8)(-8)=-3,6x64=-230,4