Question

A = x-3
B= x-2
C= x+1
D= x+4

RESPONDER:
1- 2a+3b
2- A-5D
3- B.C-A.D
4- A.B.C
5- 3C-2D

Answer 1

A=x-3    b=x-2      D=X+4        C=X+1


1. 2a+3b
2(x-3)+3(x-2)
2x-6+3x-6
2x+3x-6-6
5x-12

2. A-5D 
X-3-5(X+4)
X-3-5X-20
-X-5X-3-20
-6X-23



3. b.c
(x-2).(x+1)
x²+x-2x-2
x²-x-2

a.d
(x-3)(x+4)
x²+4x-3x-12
x²+x-1

b.c-a.d
x²-x-2-(x²+x-1)
x²-x²-x-x-2+1
0-2x-1
-2x-1

4.A.B.C
(X-3)(X-2)(X+1)
(X²-2X-3X+6)(X+1)
(X²-5X+6)(X+1)
X³+X²-5X²-5X+6X+6
X³-4X²+X+6

5. 3C - 2D
3(X+1)-2(X+4)
3X+3-2X-8
3X-2X+3-8
X-5