将下列各进行配方:1.x²-3/2x+______=(x-_____)²2.x²-6根号2x+_____=(x-_____)² 3.x²+4根号3x+____=(x+_____)².4.x²-ax+____=(x-_____)²解下列方程:(1)x²-7x+5=0 (2)x²
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