用配方法解这10题一元二次方程,(1)x2+4x+2=0; (2)3x2-6x+1=0; (3)4x2-16x+17=0; (4)3x2+4x+7=0.(5) 2x 2-9x+8=0 (6) 2x 2 +6x-27=0(7) 2x 2 -2x-80=0 (8) 2x 2+10x-200=0(9) 2x 2-20x+96=0 (10) 2x 2+23x+76=0

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用配方法解这10题一元二次方程,(1)x2+4x+2=0; (2)3x2-6x+1=0; (3)4x2-16x+17=0; (4)3x2+4x+7=0.(5) 2x 2-9x+8=0 (6) 2x 2 +6x-27=0(7) 2x 2 -2x-80=0 (8) 2x 2+10x-200=0(9) 2x 2-20x+96=0 (10) 2x 2+23x+76=0
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用配方法解这10题一元二次方程,(1)x2+4x+2=0; (2)3x2-6x+1=0; (3)4x2-16x+17=0; (4)3x2+4x+7=0.(5) 2x 2-9x+8=0 (6) 2x 2 +6x-27=0(7) 2x 2 -2x-80=0 (8) 2x 2+10x-200=0(9) 2x 2-20x+96=0 (10) 2x 2+23x+76=0
用配方法解这10题一元二次方程,
(1)x2+4x+2=0; (2)3x2-6x+1=0;
(3)4x2-16x+17=0; (4)3x2+4x+7=0.
(5) 2x 2-9x+8=0 (6) 2x 2 +6x-27=0
(7) 2x 2 -2x-80=0 (8) 2x 2+10x-200=0
(9) 2x 2-20x+96=0 (10) 2x 2+23x+76=0

用配方法解这10题一元二次方程,(1)x2+4x+2=0; (2)3x2-6x+1=0; (3)4x2-16x+17=0; (4)3x2+4x+7=0.(5) 2x 2-9x+8=0 (6) 2x 2 +6x-27=0(7) 2x 2 -2x-80=0 (8) 2x 2+10x-200=0(9) 2x 2-20x+96=0 (10) 2x 2+23x+76=0
(1)(x+2)^2=2,x+2=±根号2,x=-2±根号2,看得懂吗,回话再继续