解方程(x²-2)+2x²(x+3)-3x-(5x-7)=x(3x²-9x+17)+2

学习时间:2026-08-10 20:56:56 阅读：7972

解方程(x²-2)+2x²(x+3)-3x-(5x-7)=x(3x²-9x+17)+2急x(x²-2)+2x²(x+3)-3x(5x-7)=x(3x²-9x+17)+2

彪壮的寒风

2026-08-10 20:56:56

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解x(x²-2)+2x²(x+3)-3x(5x-7)=x(3x²-9x+17)+2x³-2x+2x³+6x²-15x²+21x=3x³-9x²+17x+2即3x³-9x²+19x=3x³-9x²+17x+2即19x-17x=2∴2x=2∴x=1