(A) 6a+24b
(B) 12u-20uv
(C) d(d-5)+7(5-d)
(D) ab+ac+bd+cd
因式分解 好高分~~~~
2007-08-03 7:24 pm
回答 (4)
2007-08-03 7:30 pm
✔ 最佳答案
A) 6a+24b = 6(a+4b)(B) 12u-20uv = 4u(3-5v)
C) d(d-5)+7(5-d) = d(d-5)-7(d-5)
= (d-5)(d-7)
(D) ab+ac+bd+cd =(ab+bd) + (ac+cd)
=b(a+d)+c(a+d)
=(a+d)(b+c)
2007-08-05 12:35 am
A. 6a + 24b
= 6 (a + 4b)
B. 12u - 20uv
= 4u (3 - 5v)
C. d (d - 5) + 7 (5 - d)
= d (d - 5) - 7 (d - 5)
= (d - 5) (d - 7)
D. ab + ac + bd + cd
= a (b + c) + d (b + c)
= (b + c) (a + d)
= 6 (a + 4b)
B. 12u - 20uv
= 4u (3 - 5v)
C. d (d - 5) + 7 (5 - d)
= d (d - 5) - 7 (d - 5)
= (d - 5) (d - 7)
D. ab + ac + bd + cd
= a (b + c) + d (b + c)
= (b + c) (a + d)
2007-08-03 7:47 pm
a) 6a+24b
=6(a+4b)
b)12u-20uv
=4u(3-5v)
c) d(d-5)+7(5-d)
=d(d-5)-7(d-5)
= (d-5)(d-7)
d) ab+ac+bd+cd
=a(b+c) +d(b+c)
=(a+d)(b+c)
希望幫到你^^
=6(a+4b)
b)12u-20uv
=4u(3-5v)
c) d(d-5)+7(5-d)
=d(d-5)-7(d-5)
= (d-5)(d-7)
d) ab+ac+bd+cd
=a(b+c) +d(b+c)
=(a+d)(b+c)
希望幫到你^^
參考: maths是我的強項..>
2007-08-03 7:32 pm
(A)6(a+4b)
(B)4u(3-5v)
(C)d^2-5d+35-7d=d^2-12d+35=(d-5)(d-7)
(D)a(b+c)+d(b+c)=(a+d)(b+c)
(B)4u(3-5v)
(C)d^2-5d+35-7d=d^2-12d+35=(d-5)(d-7)
(D)a(b+c)+d(b+c)=(a+d)(b+c)
收錄日期: 2021-04-13 00:55:57
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