September 2018 1 20 Report

1.Sprawdź czy te kwadraty są magiczne:

___________________ _____________________

|x + 1 |2x + 1|x | |3a + 3 |a + 1 |-1 - a |

|______|_____|_____| |______|______|_____|

|2x + 5 |x - 2 |x - 1 | |-3 - 3a |1 + a |5a + 5|

|______|_____|_____| |______|______|_____ |

|x - 2 |x + 3 |2x + 3| |3a z+ 3|a + 1 |-1 - a |

|______|_____|_____| |______|______|_____ |

2. Wykonaj działania:

a) 4x - (2x + 7)

b) 3a - (3a - 2)

c) 2x + 2y - (x - y)

d) 3b - (-9 - b)

e) (6a + 3b) - (12a + 5b)

f) x² + y² + z² - (-x² - y² - z²)


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