Question

hola ne ayudan porfis​

Answer 1

Respuesta:

a. 45

b. 16

c. 65

Explicación paso a paso:

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

x=7, y=-2

(7+2)(7-2)

(9)(5)

=45

b. (x-y)(x+y)

x=-5, y=-3

(-5+3)(-5-3)

(-2)(-8)

=16

c. (x-y)(x+y)

x=-9, y=4

(-9-4)(-9+4)

(-13)(-5)

=65