Odpowiedź:
1. 3^(-3)=(1/27)
2. a) (3a+4b) - ( 5a+2b) = 3a+4b-5a-2b=-2a+2b
b) 5a - ( 2a- 2b ) +4b = 5a-2a+2b+4b=3a+6b
c) 5a - (a -b ) + 7b = 5a-a+b+7b=4a+8b
d) 5a - ( 2a- 2b ) + 4b = 5a-2a+2b+4b=3a+6b
e) a+ (3a - 8b ) + 4b = a+3a-8b+4b=4a-4b
f) - ( 9a - 2b ) + 10b = = -9a+2b+10b=-9a+12b
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Odpowiedź:
1. 3^(-3)=(1/27)
2. a) (3a+4b) - ( 5a+2b) = 3a+4b-5a-2b=-2a+2b
b) 5a - ( 2a- 2b ) +4b = 5a-2a+2b+4b=3a+6b
c) 5a - (a -b ) + 7b = 5a-a+b+7b=4a+8b
d) 5a - ( 2a- 2b ) + 4b = 5a-2a+2b+4b=3a+6b
e) a+ (3a - 8b ) + 4b = a+3a-8b+4b=4a-4b
f) - ( 9a - 2b ) + 10b = = -9a+2b+10b=-9a+12b
Szczegółowe wyjaśnienie: