Question

Dado os polinomios A=4x²-8, B=2x+3 e C=x²-3x+1, efetue as operações:
a) B-3A
b) X . B
c) A+B-C
d)3A - 2B + 5C

Answer 1

Resposta:

A=4x²-8

B=2x+3

C=x²-3x+1

a) B-3A =2x+3-12x²+24=-12x²+2x+27

b) X . B =x*(2x=3)= 2x²-3x

c) A+B-C =4x²-8+2x+3-x²+3x-1 =3x²+5x-6

d)3A - 2B + 5C

=

12x²-24 -4x-6+5x²-15x+5

=17x²-19x -25