1）化簡下列各題。
(3p) x (-4p)
--------------------
2p
1b)(15a - 4a) x 2a
2)化簡下列各題。
2a)7x - 6 - 2(3x - 1)
2b)6a - 5a + 13a
3)化簡下列各題。
r r
-- - --
5 6
b 2b b
-- + -- + --
3 6 9
Help Me!!!送20點 too
2007-08-30 9:22 pm
回答 (7)
2007-09-01 4:38 am
Good!
2007-08-31 12:42 am
1a. ((3p)(-4p))/2p
=-6p
1b. 2a(15a-4a)
=22a^2
2a. 7x-6-2(3x - 1)
=x-4
2b. 6a - 5a + 13a
=14a
3a. (r/5)-(r/6)
=r/30
3b. (b/3)+(2b/6)+(b/9)
=7b/9
=-6p
1b. 2a(15a-4a)
=22a^2
2a. 7x-6-2(3x - 1)
=x-4
2b. 6a - 5a + 13a
=14a
3a. (r/5)-(r/6)
=r/30
3b. (b/3)+(2b/6)+(b/9)
=7b/9
2007-08-30 9:35 pm
1a. ((3p)(-4p))/2p
=(-12p^2)/(2p)
=-6p
1b. 2a(15a-4a)
=22a^2
2a. 7x-6-2(3x - 1)
=7x-6-6x+2
=x-4
2b. 6a - 5a + 13a
=a(6-5+13)
=14a
3a. (r/5)-(r/6)
=(6r/30)-(5r/30)
=r/30
3b. (b/3)+(2b/6)+(b/9)
=(6b/18)+(6b/18)+(2b/18)
=14b/18
=7b/9
=(-12p^2)/(2p)
=-6p
1b. 2a(15a-4a)
=22a^2
2a. 7x-6-2(3x - 1)
=7x-6-6x+2
=x-4
2b. 6a - 5a + 13a
=a(6-5+13)
=14a
3a. (r/5)-(r/6)
=(6r/30)-(5r/30)
=r/30
3b. (b/3)+(2b/6)+(b/9)
=(6b/18)+(6b/18)+(2b/18)
=14b/18
=7b/9
參考: me
2007-08-30 9:33 pm
1a) -6p
1b) 22a*2 (*2 = 二次方)
2a) x - 4
2b) 14a
3a) r/30
3b) 7b/9
1b) 22a*2 (*2 = 二次方)
2a) x - 4
2b) 14a
3a) r/30
3b) 7b/9
2007-08-30 9:32 pm
(3p) x (-4p) -12p^2
1a) ------------------ = ----------- = -6p
2p 2p
1b) (15a - 4a) x 2a = 11a x 2a = 22a^2
2a) 7x - 6 - 2(3x - 1) = 7x - 6 - 6x - 2 = x - 8
2b) 6a - 5a + 13a = a + 13a = 14a
r r 6r - 5r r
3a) -- - -- = -------- = ---
5 6 30 30
b 2b b 6b 6b 2b 14b 7b
3b) -- + -- + -- = --- + --- + --- = ----- = ---
3 6 9 18 18 18 18 9
1a) ------------------ = ----------- = -6p
2p 2p
1b) (15a - 4a) x 2a = 11a x 2a = 22a^2
2a) 7x - 6 - 2(3x - 1) = 7x - 6 - 6x - 2 = x - 8
2b) 6a - 5a + 13a = a + 13a = 14a
r r 6r - 5r r
3a) -- - -- = -------- = ---
5 6 30 30
b 2b b 6b 6b 2b 14b 7b
3b) -- + -- + -- = --- + --- + --- = ----- = ---
3 6 9 18 18 18 18 9
2007-08-30 9:31 pm
1)-6p
2)18(axa) a)13x-7 b)14a
3) r
------
30
4) 7b
----------
9
2)18(axa) a)13x-7 b)14a
3) r
------
30
4) 7b
----------
9
2007-08-30 9:30 pm
(1)(3p) x (-4p)=-12p^2
(2)(15a - 4a) x 2a=22a^2．b
(3)7x - 6 - 2(3x - 1)=7x-6-6x+2=x-4
(4)6a - 5a + 13a=12a
最後2題不懂怎樣做^^'
(2)(15a - 4a) x 2a=22a^2．b
(3)7x - 6 - 2(3x - 1)=7x-6-6x+2=x-4
(4)6a - 5a + 13a=12a
最後2題不懂怎樣做^^'
收錄日期: 2021-04-13 13:11:39
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