Question

1) Resolva as multiplicações de polinômios:
a) (x + 2).(x + 3) =
b)
(2x-5).(3x - 2) =
C) (5x-4).(5x + 4) =
d) (3x + 7). (3x-7) =
Plisss​

Answer 1

a= (x+2).(x+3)

${x}^{2} + 3x + 2x + 6 = {x}^{2} + 5x + 6$

b=(2x-5).(3x-2)

${6x}^{2}- 4x - 15x - 10 = {6x}^{2} - 19x - 10$

c=(5x-4).(5x+4)

${25x}^{2} + 20x - 20x - 16 = {25x}^{2} - 16$

d=(3x+7).(3x-7)

${9x}^{2} - 21x + 21x - 49 = {9x}^{2} - 49$