Respostas

2014-02-17T23:43:38-03:00
A) y= 2²+2.(2.1)+1²
y= 4+2.2+1
y= 4+4+1
y= 9

b) y= (2-1)³ + 2³ + 1³
 y= 1+8+1
y= 10
1 5 1
2014-02-17T23:47:13-03:00
A) y=a²+2ab+b²
y=2²+(2.2.1)+1²
y=4+4+1
y=9

b)y=(a-b)³+a³+b³
y=(2-1)³+2³+1³
y=1³+2³+1³
y=1+8+1
y=10