Answered

How to solve the quadratic equation in standard form

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Lightningflashviz
You can use factoring, completing the square and the formula
Rodriguezmina94viz
You can factor it or complete its square

Example:

By factoring,

x²-4=0
(x+2)(x-2)
x=-2 x=2

By completing its square,

x²-4=0
√x² and √4
x= ±2

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