(1-3x)²+(2x-1)²>13(x-1)(x+1)
1-6x+9x²+4x²-4x+1>13x²-13
10x
(1-3x)²+(2x-1)²>13(x-1)(x+1)
(1-3x)²+(2x-1)²>13(x-1)(x+1)
3(x+2)²-3(x+1)(x-1)≤12x²-(6x-3)(2x+1)
²是平方
(x-2y+3z)²-(x+2y-3z)²
(3+1)(3²+1)(3的4次方+1)(3的8次方+1)(3的16次方+1)
3(x+2)²-3(x+1)(x-1)≤12x²-(6x-3)(2x+1)
²是平方
(x-2y+3z)²-(x+2y-3z)²
(3+1)(3²+1)(3的4次方+1)(3的8次方+1)(3的16次方+1)
数学人气:354 ℃时间:2019-12-13 17:04:43
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