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数学
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已知x²-1/4y=0,化简2x²+y/4x²+y
人气:319 ℃ 时间:2020-03-30 22:36:29
解答
x²-1/4y=0
x²=1/4y
y=4x²
2x²+y/4x²+y
=2x²+4x²/4x²+4x²
= 6x²/8x²
=3/4
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