数学练习/代数/代数项的加减

仔细做题；使用 ^ 表示指数。

1

$7(3x+2)-x=$

2

$(6x+3)+(-5x)=$

3

$4(3x+3)=$

4

$6(5-3x)+(4x+2)=$

5

$(7x^{2}-6x)+3x^{2}-8x=$

6

$5x(4+3y)+7x-2(3x+y)=$

7

$4(3x+2y)=$

8

$-7y(3x-5)+6x=$

9

$-5x(3x+7y)-5y=$

10

$3x+7y+5x+8y=$

11

$5(4x+3y)-5y+6x=$

12

$6x+5xy-7y+5y-9x+7x=$

13

$-5(3x+6y)+15y=$

14

$5x(y+4x)-9y-4x^{2}=$

15

$4y(3x+x^{2})+(-8x^{2})=$

16

$-6x(4y+5)+5y-7x=$

17

$9(7x+y^{3})-6y^{3}+20x=$

18

$4x+7y-7x+5y-8x+5y-6x=$

19

$3x(2x+y)+10y=$

20

$-5y+6x-7y+8x=$

21

$6x^{2}+5x+4x^{2}-5x=$

22

$3y+5x-5(2x+5y)=$

23

$-9(3x+5y)-4y=$

24

$5x^{2}+3y-3x^{2}-6y+5x-8x=$

25

$12x(3x+6y)+5xy-11x^{2}=$

26

$4(3x-7y)+5(6x+3y)=$

27

$5x(5x+3y)+(4x-5y)=$

28

$(3x+5y)\times (5x-y)=$

29

$(5x+3y)\times (3x-6y)=$

30

$(4x-4y)\times (6x-6y)=$

31

$[(3x+2)+5y]+3x-5y-9x=$

32

$[5x(3x+2y)+5xy-9x]+5x=$

33

$7x-[(5x+y)\times (-7y)]=$

34

$[(6x+9)+7y(5+3x)]+24xy=$

35

$(x+y)\times 2+[(8y+x-4y)+(3x+5y-x)]=$

36

$(6x-4)\times (4x+5)\times (5x+6)=$

37

$[4\times (3+7y)-17y]+[(6x+5y-9x+(-7y))]=$

38

$5y\times (3+x)-[5\times (5x-3y)+30x]=$

39

$[(5x+5y)-(7y-(-3x)-y)]+(30x+15y)=$

40

$7x^{2}+5x-6y+5x^{2}-5x+7y-18x+8xy+x^{2}+12x-6y-7x^{2}+5x-4y\times (3x-6)+10xy-4x^{2}+{\sqrt[{3}]{27x^{3}}}=$