公式法解方程,请写出过程,公式法解方程:x^2+x-12=0x^2-√2x-1/4=0x^2+4x+8=2x+11x(x-4)=2-8xx^2+2x=0
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![公式法解方程,请写出过程,公式法解方程:x^2+x-12=0x^2-√2x-1/4=0x^2+4x+8=2x+11x(x-4)=2-8xx^2+2x=0](/uploads/image/z/2474017-25-7.jpg?t=%E5%85%AC%E5%BC%8F%E6%B3%95%E8%A7%A3%E6%96%B9%E7%A8%8B%2C%E8%AF%B7%E5%86%99%E5%87%BA%E8%BF%87%E7%A8%8B%2C%E5%85%AC%E5%BC%8F%E6%B3%95%E8%A7%A3%E6%96%B9%E7%A8%8B%EF%BC%9Ax%5E2%2Bx-12%3D0x%5E2-%E2%88%9A2x-1%2F4%3D0x%5E2%2B4x%2B8%3D2x%2B11x%28x-4%29%3D2-8xx%5E2%2B2x%3D0)
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公式法解方程,请写出过程,公式法解方程:x^2+x-12=0x^2-√2x-1/4=0x^2+4x+8=2x+11x(x-4)=2-8xx^2+2x=0
公式法解方程,请写出过程,
公式法解方程:
x^2+x-12=0
x^2-√2x-1/4=0
x^2+4x+8=2x+11
x(x-4)=2-8x
x^2+2x=0
公式法解方程,请写出过程,公式法解方程:x^2+x-12=0x^2-√2x-1/4=0x^2+4x+8=2x+11x(x-4)=2-8xx^2+2x=0
x^2+x-12=0
x1=-1/2+(1/4+12)^0.5=-1/2+(49/4)^0.5=-1/2+7/2=3
x2=-1/2-(1/4+12)^0.5=-1/2-(49/4)^0.5=-1/2-7/2=-4
x^2-√2x-1/4=0
x1=(√2)/2+(2/4+1/4)^0.5
=√2/2+(√3)/2
=(√2+√3)/2
x2=(√2)/2-(2/4+1/4)^0.5
=√2/2-(√3)/2
=(√2-√3)/2
x^2+4x+8=2x+11
x^2+2x-3=0
x1=-1+(1+3)^0.5
=-1+2
=1
x2=-1-(1+3)^0.5
=-1-2
=-3
x(x-4)=2-8x
x^2-4x=2-8x
x^2+4x-2=0
x1=-2+(4+2)^0.5
=-2+(6^0.5)
x2=-2-(4+2)^0.5
=-2-(6^0.5)
x^2+2x=0
x*(x+2)=0
x1=0
x2=-2