Knowing that a and b are inverse to each other, c and d are reciprocal to each other, m 2, find the

a, b are the opposite of each other a+b=0

c and d are the reciprocal of each other cd=1

m2 m = 2 or -2

100A+100B-20*C*D-2M A*B is CD100(A+B)-20*1-2M

20-2m when m=2 original = -24

When m=-2, the original formula =-16

The 20ab of the question should be 20cd

m2, so m=-2 or 2

a, b are opposite to each other, 100 (a+b) = 0

c and d are the reciprocal of each other, 20*c*d=20

The question is wrong, it should be 100a+100b-20*c*d-2m100a+100b=0 because a and b are inverse numbers to each other.

20*c*d=-20, because c and d are reciprocal products of each other, which is 12m=4 or -4, because the value of m has two cases.

At this point, you should understand.

Hope it solves your problem.

A, the edge and the void B are the inverse numbers of each other.

So a=-b

a+b=0,a/b=-1

c and d are the reciprocal of each other.

So cd=1

So(a+b+1)(a b)-2004cd(0+1)Wang Kai (-1)-2004 1

a, b are inverses to each other, and b, c are reciprocal to each other.

then a+b=0, bc=1

then a=-b, ac=-1

a-b+ac

(a+b)+ac

A and b are inverses to each other.

a+b=0 a=-b

b and c are the reciprocal of each other.

bc=1-ac=1 ac=-1

a-b+ac

(a+b)+ac=-1

a+b does a+b+c-cd+(-m).

a+b)+(1)-1+c-（±2)

0-1-1+c±2

Pure caution c-or(c-4).

Add filial piety reed oil! If you don't understand, ask again, and answer sincerely!

Solution: A and b are opposite numbers to each other, a+b=0, and the rock is old.

c and d are the reciprocal of each other cd=1x-1|=2,x=-1 or finch pure 3,when x=-1,2(a+b)2005-2(cd)2006+1x=0-2-1=-3;

When x=3, 2(a+b)2005-2(cd)2006+1x=0-2+13=-123

Solution: Dismantling and talking about the opposite number of a and b touching each other, c and d are the reciprocal of each other, the absolute value of m is equal to 2, a + b = 0, xiaoyan cd = 1, m2 = 22 = 4, 5a + 5b - 12010 cd-m2, 5 0-12010 1-4, -412010