Equações exercicios
292 palavras
2 páginas
[pic]1) Calcule o valor das expressões dando as respostas na forma de fração:
a) [pic] + [pic][pic][pic]+ [pic] -1 b) [pic] +[pic] c) [pic] [pic][pic]
2) Resolva as equações a seguir:
a)18x - 43 = 65
b) 23x - 16 = 14 - 17x
c) 10x - 5 (1 + x) = 3 (2x - 2) - 20
d) x(x + 4) + x(x + 2) = 2x2 + 12
e) [pic]
f) 4(x + 6) - x = 5x
g) [pic]
h) [pic]
i) [pic]
j) [pic]
k) [pic]
3) 3x = 9
4) -2x = 18
5) 4x = - 27
6) [pic]x = [pic]
7) -[pic]x = [pic]
8) [pic]x = - [pic]
[pic]
9) [pic]x = [pic]
10) [pic]x = [pic]
11) [pic] x = [pic]
12) [pic] x = [pic]
13) 10 + x = 9 – 2x
14) x [ 1 + 2(3 – 1)] = 4x - 7
15) 4 + [ x – (2 + 1)2 + 1] = 6 – x (1 – 2 )2
16) [pic]
17) [pic]
18) [pic]
19) [pic]
20) [pic]
21) [pic]
22)[pic]
23) [pic]
24) [pic]
25) [pic]
26) [pic]
27) [pic]
28) [pic]
[pic]
RESPOSTAS:
1- a) [pic]
b) [pic]
c) 2
2- a) x = 6
b) x = [pic]
c) x = 21
d) x = 2
e) x= -21
f) x=12
g) x = [pic]
h) x= 22
i) x=[pic]
j) x= 3
k) x =[pic]
3- x = 3
4- x = -9
5- x = [pic]
6- x = [pic]
7- x = - [pic]
8- x = -[pic]
9- x = 1
10- x = - [pic]
11- x = 3
12- x = - 9
13- x = -[pic]
14- x = - 7
15- x = 5
16- x = - [pic]
[pic]
17- x = -[pic]
18- x = 13
19- x = 3
20- x = 2
21- x = 0
22- x = 4
23- x = [pic]
24- x = [pic]
25- x = [pic]
26- x = -1
27- x = [pic]
28- x = [pic]