因式分解:2x^2-1/2y^2大家帮帮忙
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因式分解:2x^2-1/2y^2大家帮帮忙
因式分解:2x^2-1/2y^2大家帮帮忙
因式分解:2x^2-1/2y^2大家帮帮忙
2x² - (1/2)y²
= (1/2)(4x² - y²)
= (1/2)(2x+y)(2x-y)
2x² - 1/(2y²)
= (1/2)(4x²-1/y²)
= (1/2)(2x+1/y)(2x-1/y)
2x^2 - 1/(2y^2)
= (1/2) * (4x^2 - y^2)
= (1/2) * (2x+y) * (2x-y)
(4x^2-y^2)/2
会了吧
2x^2-1/2y^2
=1/2(4x²-y^2)
=1/2(2x+y²望采纳