Question

4x的平方-6x-3=0用配方法

Answer 1

4x^2-6x-3=0
4x^2-6x=3
x^2-3x/2=3/4
x^2-3x/2+9/16=3/4+9/16
(x-3/4)^2=21/16
x-3/4=±√21/4
x=3/4±√21/4=(3±√21)/4
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