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Primeira lista de exercícios de matemática (entregar no dia da prova)
Resolver: Respostas
1) (1/5+2/3-1/15).(2/5-1/3+2/15) 4/25
2) (1+1/2-1/3):5/6 7/53) (1/8-2/5):(1/20+1/4) -11/12
4) (1/2+1/3)20
:(1-1/6)18
25/36
5) am
.an
am+n
6) am
:an
am-n
7) (am
)n
am.n
8) (a.b)n
an.b
n
9) (a/b)n a
n/b
n
10) an.a
n+1.a
n+2.a
2-3n a
5
11) ax(x-1)
:ax(x+1)
a-2x
Simplifique as expressões:1) (6x
4).(2x
2) 12x
6
2) 2551
:2549
625
3) (1/3)2]
1/2 1/3
4) 3 96 ..27 y x 3x2
y3
5)5 20
4 16
32
16
y
x (x/y)
4
6) 0)
13
15( 1
7)2)
3
2(
1
4/9
8)2
)2
1(
2
1/2
Efetuar as multiplicações:
1) (1/2xy2+1/3a
2 b). (1/2xy
2+1/3a
2 b) 1/4x
2y
4+1/3a
2 bxy
2+1/9a
4 b
2
2) (1-1/2xy).(1-1/2xy)
1-xy+1/4x2y
2
3) (a+bx).(a+bx)
a2+2abx+b
2x
2
4) (a-bx).(a-bx)
a2-2abx+b
2x
2
5) (1-x).(1+x) 1-x2
6) (2/3-x2).(2/3+x
2) 4/9-x
4
7) (xy+1/2a).(xy-1/2a) x2y
2-1/4a
2
8) (a+b).(a+c) a2+ac+ab+bc
9) (x+1).(x2+x+1) x
3+2x
2+2x+1
10) (x-1).(x2-x+2) x
3-2x
2+3x-2
11) (x2-x+1).(2x
2+x-1) 2x
4-x
3+2x-1
12) (x4-x
2+1).(x
3+x-1) x
7-x
4+x
2+x-1
13) (x+1).(x-1).(x2+x+1) x
4+x
3-x-1