(2x-5)*(2x-5)+(3x+1)(3x+1)>13*(x*x-10)

问题描述:

(2x-5)*(2x-5)+(3x+1)(3x+1)>13*(x*x-10)

化为:4x²-20x+25+9x²+6x+1>13x²-130
即:14x