The math problem in junior high school is the calculation and method of the root number of a quadratic equation in the last semester of grade three. It's urgent now, and the mid-term exam is coming. That's very good. Calculation of root number

(root number B )/ (root number a)

(radical number B )/ (radical number a) = radical number (b/a) = radical number (a * b/b 2) = [radical number (A*B)]/A

For example, the square root of 6 in root number 3 = (the square root of 6)/(root number 3) = the square root of 6/3 = root number 2.

Root number 5 Root number 4 = (root number 4)/ (root number 5) = root number (4/5) = root number (4 * 5/5 2) = root number (2 2 * 5/5 2) = (2/5) * root number 5 = 0.4 * root number 5.

Root number 3 = (root number 3)/ (root number 3) = 1.

Note: If the form you are talking about is the root symbol [(root symbol B)/ A]

Then the radical number [(radical number b)/a] = radical number [radical number (b/a 2)] = the radical number of the fourth power (b/a 2).

One-variable quadratic equation method

1. See if it can be solved by factorization (in factorization, consider the common factor method first, then the square formula method, and finally the cross multiplication).

See if we can solve the problem directly.

3. Solve by formula method.

4. Finally, consider the matching method (although the matching method can solve all quadratic equations with one variable, it is sometimes too troublesome to solve problems). If you want to take part in the competition, you can follow the following order:

1. Factorization 2. Vieta theorem 3. Discriminant 4. Equation 5. Matching method 6. Square root 7. Root formula 8. Representative.

Good luck! Come on!