Question

Determine os produtos notáveis :

a) (x + 6).(x + 5) =

b) (x – 4).(x + 7) =

c) (x + 3).(x - 8) =

d) (x + 6).(x – 4) =

e) (x – 2).(x + 9) =

f) (x + 9).(x + 8) =

g) (x – 5).(x + 9) =

h) (x – 8).(x – 2) =

i) (x + 7).(x - 6) =

j) (x – 6).(x + 3) =

Answer 1

Explicação passo-a-passo:

(x + 6).(x + 5)

x*x+5x+6x+6*5

x²+11x+30

(x – 4).(x + 7)

x*x+7x-4x-4*7

x²+3x-28

(x + 3).(x - 8)

x*x-8x+3x-3*8

x²-5x-24

(x + 6).(x – 4)

x*x-4x+6x-6*4

x²+2x-24

(x – 2).(x + 9)

x*x+9x-2x-2*9

x²-7x-18

(x + 9).(x + 8)

x*x-8x+9x+9*8

x²+17x+42

(x – 5).(x + 9)

x*x+9x-5x-5*9

x²+4x-45

(x – 8).(x – 2)

x*x+9-8x-8*9

x²+x-72

(x + 7).(x - 6)

x*x-6x+7x-7*6

x²+x-42

(x – 6).(x + 3)

x*x+3x-6x-6*3

x²-3x-18