Question

86. a = x - 3 b = x - 2 C = x + 1 = x + 4 calcule a) ab + c. b)a + c d .c)bd+cd .D)abc

Answer 1

86. A= x - 3 B = x - 2 C = x + 1 D= x + 4
 
a) ab + c
x-3*x-2+x+1
x²-2x-3x+6+x+1
x²-4x+7

b)a + cd
x-3+x+1*x+4
x-3+x²+4x+x+4
x²+6x+1 

c)bd+cd 
x-2*x+4+x+1*x+4
x²+4x-2x-8+x²+4x+x+4
2x²7x-4


d)abc
x-3*x-2*x+4
x²-2x-3x+6*x+1
x³-2x²-3x²+6x+x²-2x-3x+6
x³-4x²+x+6