a) 5 - 2y dla y = 1
b) a(2a + 1) dla a = 1
c ) s² - 1 dla s = -3
d) 2(x - y) dla x = -3 , y = 4
e) a + 1 - 4b dla a = -6 , b= ¾
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a) 5 - 2y dla y = 1 = 5- 2*1=5-2=3
b) a(2a + 1) dla a = 1 = 2a2 + a = 2*1 + 1=2 + 1 =3
c ) s² - 1 dla s = -3=9-1=8
d) 2(x - y) dla x = -3 , y = 4 = 2x -2y= -6-8= -14
e) a + 1 - 4b dla a = -6 , b= ¾= -6 +1 - 3=-8
a)5-2y=5-2x1=5-2=3
b)a(2a+1)=2a do kwadratu+a=2x1 do kwadratu+1 do kwadratu=2+1=3
c)s do kwadratu-1=(-3)do kwadratu -1=27-1=26
d)2(x-y)=2x-2y=2x(-3)-2x4=-6-8=-14
e)a+1-4b=-6+1-4x ¾=-5-3=-8