Zapisz w jak najprostszej postaci
A ) (b+3)2 -(b-3)2
b)(5m+4n)2 – (4m-5n)2
c)(3x-2)2 +2(x+3)2
e)(5-0,2k3)2 + 5(k3-5)2
f)(a+2)2 +(a-2)2
g)(x-2)2 -(x+1)2
h)2(3+b)2 -12b
i)4x2 +1 – (2x+1)2
j)(x+3y)2 -9y2
błagam o bardzo szybkie odp.. na jutroo !!! ; )
bd nja ***
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A)
2b+6-2b+6=12
B)
10m+8n-8m+10n=2m+18n
C)
6x-4+4x+12=10x+8
E)
10-0,4k3+10k3-50=9,6k3-40
F)
2a+4+2a-4=4a
G)
2x-4-2x-2=-6
H)
12+4b-12b=12-8b
I)
4x2+1-4x-2=4x2-4x-1
J)
2x+6y-9y2