1a.Factorize k^3+64
1b.Hence,Factorize
k^3+k+68
2a.Factorize 2h^3+54
2b Hence,Factorize
2h^3-6h^2-18h+54
3.9^x/2 + 3^x+1 / 3^x-3^x-1
4.Factorize X^2+6X AND X^2-36
MATHS ........THX!!!
2010-02-20 9:47 pm
回答 (1)
2010-02-20 10:57 pm
✔ 最佳答案
1a. (k+4)(k^2-4k+16)1b. k^3+k+68
=K^3+64+4+k
=(k+4)(k^2-4k+16)+4+k
=(k+4)(k^2-4k+17)
2a. 2h^3+54
=2(h^3+27)
=2(h+3)(h^2-3h+9)
2b 2h^3-6h^2-18h+54
=2(h+3)(h^2-3h+9)-6h(h+3)
=(h+3)(2h^2-6h+18-6h)
=(h+3)(2h^2-12h+18)
2010-02-20 15:01:14 補充：
4. X^2+6X
=x(x+6)
X^2-36
=(x+6)(x-6)
收錄日期: 2021-04-23 18:24:57
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