Question

Calcule:
a) (3x - 4) . (2x² - 5x+1)
b) (x - 1) . (x² - 7x+10)
c) (y+3) . (y - 3)
d) (5x² - 9) . (7x²+8x - 4)
Preciso da conta completa, não só a resposta. Obg.

Answer 1

a) (3x - 4) . (2x² - 5x+1)
(-1x) . ( 4x -5x + 1)
(-1x) . (-1x+1)
(-1x) . (-0x)
0x

b) (x - 1) . (x² - 7x+10)
(1x-1) . (1x²-7x+10)
(0x) . ( 1x + 3)
(0x) . ( 4x)
0x

c) (y+3) . (y - 3)
(1y+3) . (1y-3)
4y.(-2y)
8y

d) (5x² - 9) . (7x²+8x - 4)
(25x-9) . ( 48x+8x-4)
(16x) . ( 56x-4)
(16x). (58x)
IR