求初三数学一元二次方程练习题
钱城回答:
1)x^2-9x+8=0答案:x1=8x2=1(2)x^2+6x-27=0答案:x1=3x2=-9(3)x^2-2x-80=0答案:x1=-8x2=10(4)x^2+10x-200=0答案:x1=-20x2=10(5)x^2-20x+96=0答案:x1=12x2=8(6)x^2+23x+76=0答案:x1=-19x2=-4(7...
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求初三数学一元二次方程练习题
钱城回答:
1)x^2-9x+8=0答案:x1=8x2=1(2)x^2+6x-27=0答案:x1=3x2=-9(3)x^2-2x-80=0答案:x1=-8x2=10(4)x^2+10x-200=0答案:x1=-20x2=10(5)x^2-20x+96=0答案:x1=12x2=8(6)x^2+23x+76=0答案:x1=-19x2=-4(7...