Question

MEE AJUDEEM POOR FAVOOR VALENDO 15 PONTOS
Sendo :
A=2x+1
B=x+4
C=2x-3
D=x-2

Determine :
a)A.C+B
b)B.D+C
c)A.C.D
MEE AJUDEEM POOR FAVOOR VALENDO

Answer 1

Determine :
a)A.C+B=(2x+1)(2x-3)+x+4=4x²-6x+2x-3+x+4=4x²-3x+1
b)B.D+C=(x+4)(x-2)+2x-3=x²-2x+4x-8+2x-3=x²4x-11
c)A.C.D=(2x+1)(2x-3)(x-2)=(4x²-3x+1)(x-2)=4x³-8x²-3x²+6x+x-2=4x³-11x²+7x-2