For the quadratic function formula, there are three situations:
The equation is 1 and the quadratic coefficient is 1
2. Equation with quadratic coefficient not 1
3. The formula is (ax+b) completely flat.
Extended data
Solving equation: 2x? +6x+6=4
Analysis: the original equation can be arranged as: x? +3x+3=2, which can be obtained by the formula (x+ 1.5)? = 1.25 can be solved by finding the root.
Solution: 2x? +6x+6=4
& lt= & gt(x+ 1.5)? = 1.25
X+1.5 = the square root of 65438 +0.25.
In the unary quadratic equation, the matching method is actually to shift the terms of the unary quadratic equation and add the square of half the absolute value of the coefficient of the first term to both sides of the equal sign.