8x^2 - 18y^2 - 6x + 9y
請詳細列明所有步驟。
F.2 因式分解
2006-10-23 4:52 am
回答 (6)
2006-10-23 5:35 am
✔ 最佳答案
8x²-18y²-6x+9y =2(4x²-9y²)-3(2x-3y) ---點解變左[-3y]既？ because 負負得正！
=2[(2x)²-(3y)²;]-3(2x-3y)
=2(2x+3y)(2x-3y)-3(2x-3y)
=(2x-3y)[2(2x+3y)-3]
=(2x-3y)(4x+6y-3)
2006-10-23 6:21 am
8x²-18y²-6x+9y
=2(4x²-9y²)-3(2x-3y)
=2[(2x)²-(3y)²]-3(2x-3y)
=2(2x+3y)(2x-3y)-3(2x-3y)
=(2x-3y)[2(2x+3y)-3]
=(2x-3y)(4x+6y-3)
=2(4x²-9y²)-3(2x-3y)
=2[(2x)²-(3y)²]-3(2x-3y)
=2(2x+3y)(2x-3y)-3(2x-3y)
=(2x-3y)[2(2x+3y)-3]
=(2x-3y)(4x+6y-3)
2006-10-23 5:01 am
8x^2-18y^2-6x+9y
=(8x^2-18y^2)-(6x-9y)
=2(4x^2-9y^2)-3(2x-3y)
希望幫到你la......
=(8x^2-18y^2)-(6x-9y)
=2(4x^2-9y^2)-3(2x-3y)
希望幫到你la......
2006-10-23 4:59 am
8x²-18y²-6x+9y
=2(4x²-9y²)-3(2x-3y)
=2[(2x)²-(3y)²]-3(2x-3y)
=2(2x+3y)(2x-3y)-3(2x-3y)
=(2x-3y)[2(2x+3y)-3]
=(2x-3y)(4x+6y-3)
=2(4x²-9y²)-3(2x-3y)
=2[(2x)²-(3y)²]-3(2x-3y)
=2(2x+3y)(2x-3y)-3(2x-3y)
=(2x-3y)[2(2x+3y)-3]
=(2x-3y)(4x+6y-3)
參考: Calculation
2006-10-23 4:58 am
8x² - 18y² - 6x + 9y
=8x²-6x-18y²+9y
=2(4x-3)-9(2y+1)
It cannot be factorize.
=8x²-6x-18y²+9y
=2(4x-3)-9(2y+1)
It cannot be factorize.
2006-10-23 4:56 am
8x^2 - 18y^2 - 6x + 9y
=8x^2-6x-18y^2+9y
=2(4x-3)-9(2y+1)
=8x^2-6x-18y^2+9y
=2(4x-3)-9(2y+1)
收錄日期: 2021-04-12 21:51:48
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