Question

7) Calcule as expressões:

a) (2/5)²+(-1/5)³=

b) (3/2)²+3x(-1/2)²=​

Answer 1

2/5x2/5=

4/25

1/5x1/5x1/5=

1/125

4/25+1/125

25,125|5

5,25|5

1,5|

1,1=5x5x5=125

125÷25=5

5•4=20

20/125+1/125=21/125

a)Resposta=21/125

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3/2x3/2=

9/4

-1/2x-1/2=

1/4

9/4+3x1/4

9/4+3/1x1/4

9/4+3/4

12/4=3

b)Resposta=12/4=3