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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2.
a) 4x-(2x+7)= 4x-2x-7= 2x-7
b)3a-(3a-2)=3a-3a+2=2
c)2x+2y-(x-y)= 2x+2y-x+y= x+3y
d)3b-(-9-b)=3b+9-b=2b+9
e) (6a+3b)-(12a+5b)= 6a+3b-12a-5b=-6a-2b
f)x² + y² + z² - (-x² - y² - z²)=x²+y²+z²+x²-y²-z²=x⁴+y⁴