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What is mathematical collocation? Can you give me an example? . .
1, first sort out the unknowns on one side of the equation and the constant terms on the other side of the equation.

Is that an axe? +bx=-c

2. Convert the quadratic coefficient into 1.

x？ +bx/a=-c/a

3. Add the square of half of a coefficient to both sides at the same time.

x？ +bx/a+b？ /4a？ =b？ /4a？ -c/a

The writing on the right is completely flat.

(x+b/2a)？ =(b？ -4ac)/4a？

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