Question

(x+y)+(x-y)

help me

Answer 1

(x+y)+(x-y)

= x+y+x-y

= (x+x)+(y-y)

=2x

Answer 2

Ta có:

(x + y) + (x - y) = x + y + x - y = (x + x)+ (y - y) = 2x

Answer 3

(x + y) + (x - y) = x + y + x - y = (x + x) + (y - y) = 2x

Answer 4

(x+y)+(x-y)

= >x+y+x-y

= >(x+x)+(y-y)

=>2x

Answer 5

( x+y ) + ( x-y ) = x + y + x - y

= ( x + x ) + ( y - y )

= 2x