x²-4x+y²-10y+29=0x²-4x+4+y²-10y+25=0(x-2)²+(y-5)²=0∵(x-2)²≥0,(y-5)²≥0∴x=2,y=5代入原式=4×25+2×8×25+16×25 =900(1)=(x-1)(x+3)(2)=(x+2)(x+4)(3)=(x-1)(x-3)(4)=(x+1)(x-5)(5)=(x+1)(x-7)(6)=(x+1)(x-2)
900