Answer:

1, in general form, that is, ax? +bx=c=0 form

2. Convert the quadratic coefficient into 1.

3. Move the constant term to the right of the equal sign, that is, move the term.

4. At the same time, add the square of half of the first coefficient on both sides to form a complete square formula.

5. Square root

6. calculate the value of x.

For example: 3x? = 3-8 times

Tidy up 3x? +8x-3=0

Divide both sides by 3 at the same time to get x? +8/3x- 1=0

Move items and get x? +8/3x= 1

Plus (4/3) on both sides? , get an X? +8/3 times+(4/3)? = 1+(4/3)?

Formula, get (x+4/3)? =25/9

Square root, x+4/3 = 5/3.

That is, x+4/3=5/3 or x+4/3=-5/3.

∴x 1= 1/3 x2=-3