First, the way of judgment.

Observe whether there are parentheses in the mathematical expression. If there are parentheses, you need to calculate the expression in parentheses first, and then use the external expression to operate.

Observe whether there is multiplication in the mathematical expression. If there is a multiplication operation, you need to calculate the power and multiplication first, and then calculate the addition and subtraction operation according to the priority of the operation.

Observe whether there is a power exponent in the mathematical expression. If there is a power exponent, you need to calculate the power operation first, and then add and subtract according to the priority of the power exponent.

Second, the definition of several tests

Binomial is an algebraic expression composed of the sum of several monomials. Each monomial is called a polynomial term, and several monomials are polynomial terms. The number of polynomial terms has nothing to do with the number of times, but it is related to the number of polynomial terms. For example, (x+y+z) is a trinomial and (x+y) is a binomial.

Learn several test methods:

First, understand the concept.

First of all, we need to understand the definitions and concepts of several terms. Binomial is an algebraic expression composed of the sum of several monomials, and each monomial is called a polynomial term. It needs to be clear that the degree and degree of polynomial are related to the complexity of polynomial, but not to the number of terms of polynomial.

Second, master the basic operating rules:

Learning a few terms requires mastering basic operation rules, including addition, subtraction, multiplication and division. When calculating the sum of polynomials, we need to pay attention to the use of parentheses and the priority of operation. In addition, you need to master the rules of power operation, including power and root.

Third, practice.

Through a lot of practice and practice, we can gradually master several calculation methods. You can start with simple polynomials, gradually increase the difficulty and practice the calculation of complex terms. In practice, you need to pay attention to details and calculation steps to avoid making mistakes because of carelessness.