Question

b) (3m + 2n) (3m − 2n) =
c) (4xy – 2x) (4xy + 2x) =
d) a 2 – b 2 =
e) x 2 – 4n 2 =
f) 25x 2 – 64 =
g) x 2 – 400 =
h) ___ – 16y 2 = ( ___ + 4y )(5x − ___ )

ayuda

Answer 1

Explicación paso a paso:

b) (3m + 2n) (3m − 2n) = (3m)^2 - (2n)^2 = 9m^2 - 4n^2

c) (4xy – 2x) (4xy + 2x) = (4xy)^2 - (2x)^2 = 16(xy)^2 - 4x^2

d) a 2 – b 2 = (a + b)(a - b)

e) x 2 – 4n 2 = (x + 2n)(x - 2n)

f) 25x 2 – 64 = (5x + 8)(5x - 8)

g) x 2 – 400 = (x + 20)(x - 20)

h)25x^2 – 16y 2 = ( 5x + 4y )(5x − 4y )