Question

59) DETERMINE OS SEGUINTES Polinômios:
a) (x + 9).(x-20 ) =
b) (x + 7).(x+5) =
c) (2x + 1). ( 6x² – 5x + 3 ) =
d) (x + 5).(x² + 2x - 10 ) =​

Answer 1

Resposta:

a) (x + 9).(x-20 ) =

${x}^{2} - 20x \: + 9x - 180 =$

${x}^{2} - 11x - 180$

b) (x + 7).(x+5) =

${x}^{2} + 5x + 7x + 35 =$

${x}^{2} + 12x + 35$

c) (2x + 1). ( 6x² – 5x + 3 ) =

${12x}^{3}- \: {10x}^{2} +6x + {6x}^{2} - 5x + 3 =$

${12x}^{3} - 4 {x}^{2} + x + 3$

d) (x + 5).(x² + 2x - 10 ) =

${x}^{3}+2 {x}^{2} -10x+5 {x}^{2} - 10x - 50 =$

${x}^{3 } + {7x}^{2} - 20x - 50$