Question

a) (x+y) . (x-y)

b) (y-7) . (y+7)

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

d) (2x+5) . (2x-5)

e) (3x-2) . (3x+2)

f) (5x+4) . (5x-4)

g) (3x+y) . (3x-y)

h)

Answer 1

Resposta:

Explicação passo a passo:

A) (x+y) . (x-y)

= x^2 - y^2

b) (y-7) . (y+7)

= y^2 - 7^2

= y^2 - 49

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

= x^2 - 3^2

= x^2 - 9

d) (2x+5) . (2x-5)

= (2x)^2 - 5^2

= 4x^2 - 25

e) (3x-2) . (3x+2)

= (3x)^2 - 2^2

= 9x^2 - 4

f) (5x+4) . (5x-4)

= (5x)^2 - 4^2

= 25x^2 - 16

g) (3x+y) . (3x-y)

= (3x)^2 - y^2

= 9x^2 - y^2