Z.4 str 41.Matematyka z Plusem
a) (a+b)x3+(a+b)x2+(a+b)x=(a+b)x( )
b) (x+1)x2+(x+1)(1-x)+(x+1)2=(x+1)( )
Z.3
d) 14i1/21*8/17+14i1/21*9/17=
e)1/333*1/8+1/111*23/24=
f)7(3)+7
-----------=
7(2)+1
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Z.4 str 41.Matematyka z Plusem
a) (a+b)x3+(a+b)x2+(a+b)x=(a+b)x( x3+x2+x)
b) (x+1)x2+(x+1)(1-x)+(x+1)2=(x+1)( x2+1-x +2 )=(x+1)( x2-x +3 )
Z.3
d) 14i1/21*8/17+14i1/21*9/17= = 14 i 1/21 ( 8/17 + 9/17) = 14 i 1/21
e)1/333*1/8+1/111*23/24=1/111 ( 1/3 * 1/8 + 23/24) = 1/111 * 1= 1/111
f)7(3)+7 7( 7(2) +1)
-----------= ------------- = 7
7(2)+1 7 (2) + 1