Wat is 5 (x-y) - (x-y)?

Wat is 5 (x-y) - (x-y)?
Anonim

Antwoord:

# = 4 (x -y) #

Uitleg:

# 5 (x-y) - (x-y) #

# = 5 (x-y) -1 (x-y) #

# = 5 * (x) + 5 * (-y) + (-1) * (x) + (-1) * (- y) #

# = 5x -5y -x + y #

Groeperende termen:

# = 5x - x -5y + y #

# = 4x - 4y #

#4# is gebruikelijk in beide termen:

# = 4 (x -y) #