Question

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

calcule:
a) AB+C
b)A+CD
c)BD+C
d)ABC

Answer 1

Olá

a)
(x-3).(x-2)+x+1
x²-2x-3x+6+x+1
x²-5x+x+6+1
x²-4x+7 <---

b)
(x-3)+(x+1).(x+4)
x-3+x²+4x+1x+4
x²+4x+1x+x+4-3
x²+6x+1 <---

c) (x-2).(x+4)+x+1
x²+4x-2x-8+x+1
x²+2x+x-8+1
x²+3x-7 <---

d) (x-3).(x-2).(x+1)
x²-2x-3x+6.(x+1)
x³-2x²-3x²+6x+x²-2x-3x+6
x³-5x²+6x+x²-5x+6
x³-4x²+1x+6