What is the content of the rule of merging similar terms?

If you have the same factor, put it together and add / subtract the rest

The rule of inducing and merging similar items

When the coefficients of the same kind are added together, the result is taken as the coefficient, and the letter and the exponent of the letter remain unchanged

What are the rules and concepts for merging similar terms?

Add the coefficients of the same category as the combined coefficients, and the letters and the index of the letters remain unchanged

RELATED INFORMATIONS

1. What is the result of merging similar items: - a-7a + 3A
2. Merge similar items after removing brackets (1) - 3 + (- X's square + 4x) - (- 8 + 3x's Square) (2) 9A's square + [7a's Square - (2a-a's Square) - 3A]
3. (2a-b of a + B - B of a-b) / / a-2b of a + B
4. Calculate the average growth rate In 2004, the power output of the Three Gorges power station was 39.2 billion kwh. It is estimated that the power output in 2006 will be 57.3 billion kwh. The annual average growth rate of the power output in these two years is the same What is the average annual growth rate of 2004-2006? (the result is accurate to 1%)
5. On the solution of binary linear equations, inequalities, factorization, the problem of complete square formula, to ten can I want the topic, not the explanation
6. How to multiply a monomial by two polynomials? (6-2x) (10-2x) x
7. Is there any way to transform the equation composed of cubic polynomials into the equation in the form of multiplication of first-order polynomials and second-order polynomials? The equation composed of quadratic polynomials can be transformed into the form of multiplication of two first-order polynomials, and cross multiplication can be used. What about the equation of cubic polynomials? For example, 2x ^ 3-6x ^ 24 = 0 In the example, 4 is preceded by a plus sign
8. If the polynomial 4 / 3x ^ m + (n-2) x + 1 is a quadratic trinomial, then M=
9. It is known that the polynomial (A-2) x ^ 4 + 2x-1 / 2x ^ B-B about X is a quadratic trinomial. When x is equal to - 2, find the value of the quadratic trinomial Just now I saw a few. They said that a should be zero, but even if a is zero, then the fourth power of X is still four. Why is it quadratic?
10. The addition and subtraction of the integral of grade one Given that the polynomial (m-2) x & sup2; + 2xy-y & sup2; + 3x & sup2; - x + 1 does not contain X & sup2;, find the value of 3M & sup2; - M + 1 No, no, no, no, no, no, no, no, no, no, No
11. Mathematical problems. The problem of merging the same kind of items after the addition and subtraction of integral Is it OK to calculate like the square of 9x + 6x - the square of 3x + 2x = (9x-3x) + (the square of 6x + the square of 2x)?
12. [Volume 1 of junior high school] how to simplify the formula with quotient! Definition and how to do it?
13. The sum of x square + my-12 and polynomial nx square-3y + 6 does not contain X and Y. try to find the value of Mn
14. Write a polynomial with degree 3, number of terms 3 and constant term - 1!
15. A quadratic trinomial with only the letter Y, its quadratic and primary coefficients are all 3, and the constant term is - 2, then the polynomial is______ ．
16. A quadratic trinomial about x such that the coefficient of the quadratic term is 2 and the constant term is 3. When x = 1, the value of this polynomial is 10 RT
17. The classroom is 8 meters long, 6.5 meters wide and 2 meters wide. The area of doors and windows is 26 square meters. What is the painting area for painting the walls and roofs around
18. Xiaolan's room is 3.5 meters long, 3 meters wide and 3 meters high. Except for 4.5 square meters of doors and windows, wallpaper is pasted on all four walls of the room. Each roll of wallpaper is 6 square meters How many rolls of wallpaper do you need?
19. The car starts to drive on the straight road from the standstill, the acceleration of the car changes with time within 60 seconds, and the distance of the car within 60 seconds is calculated
20. A car moves on a straight road at an initial speed of 6m / s, and the acceleration after braking is 2m / S & sup2; How large is the displacement of the car within 2 seconds after braking? ② What is the displacement of the car within 8s after braking?