1) (2x+4y)(3x-7y)-10x+35y
2ai) 6x^2+xy-2y^2
ii) 2x^2-xy+2x-y
Hence,
b) 10x^2-xy-2y^2+4x-2y
仲有,,如果 有'' hence'' 咁點先睇到佢地既關係..?
thzzzz.....
F.3 MATHS... FACTORIZE 2題 急..
2007-11-16 4:14 am
回答 (2)
2007-11-16 5:13 am
✔ 最佳答案
1) (2x+4y)(3x-7y)-10x+3 5y= 2(x+2y)(3x-7y)-5(2x-7y)
2ai) 6x^2+xy-2y^2
= (3x+2y)(2x-y)
ii) 2x^2-xy+2x-y
= (x+1)(2x-y)
b) 10x^2-xy-2y^2+4x-2y
=(10x^2-xy-2y^2)+2(2x-y)
=(5x+2y)(2x-y)+2(2x-y)
= (5x+2y+2)(2x-y)
hence=由此
2007-11-16 5:11 am
1) xxxx(Sorry)
2ai)(3x-2y)(x+y)
ii)(2x-y)(x+1)
b)(2x-y)(5x+2y+2)
2ai)(3x-2y)(x+y)
ii)(2x-y)(x+1)
b)(2x-y)(5x+2y+2)
收錄日期: 2021-05-01 15:26:16
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