Is it a fraction only if the denominator is a letter

When the letter in the denominator is not 0, it is. The details are as follows: the first section of the fraction basic concept form, such as a / B, a, B are integral, B contains unknowns and B is not equal to 0 integral is called fraction

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1. The relationship between monomials and polynomials contained in integers
2. The judgment of fraction! Is 1 / x + 1 / Y2 a fraction?
3. Fractional discriminant Generally, if a and B represent two integers and B contains letters, then the algebraic expression a / B is called a fraction Why is B / 2 π not a fraction? Because Pi is a mathematical symbol, isn't it a letter?
4. Is it necessary to make it the simplest to confirm whether it is a fraction or an integral? For example: a * A / 2A (fraction) Simplification: A / 2 (integral) So what is that? Do you need to simplify when judging fractions and integers?
5. Reduce the fraction to the simplest fraction The fraction 2M2 + M-3 / 4m2-9 is reduced to the simplest fraction
6. Judge which is an integral and which is a fraction 1 / x, X / 3, 3 / m, 3 / x, which is an integral and which is a fraction?
7. The following fraction is the simplest A 2x/x^2+1 B4/2x Cx-1/x^2-1 D1-x/x-1
8. If a fraction is reduced to an integral, then it is not a fraction
9. Judge whether it is a fraction, see before or after the score
10. Which fraction is a monomial
11. Is it a fraction to reduce the letters in the denominator Is 3A / a a fraction
12. The condition of positive value of fraction: (denominator ≠ 0) the condition of negative value:
13. In the formula, what conditions should the numerator and denominator satisfy to make their values zero
14. Basic properties of fraction: the numerator and denominator of fraction are multiplied by (or divided by) the same integral which is not equal to zero, and the value of fraction remains unchanged, which is expressed as
15. Help me judge if this is the simplest quadratic radical Tick (A & # 178; + B & # 178;) (the square of a under the root plus the square of B) urgent!
16. Judge whether the following forms are the simplest quadratic radicals: √0.2a,√3ab,√18a²b（a≥0）,1/ab√ab
17. On distinguishing quadratic radical In the following formulas, what is not quadratic radical is: ("√" means "under the root sign") ("& sup2;" means square) A√35 B√3-π C√b²+4 D√2/7
18. A + 2B = 22b + 3C = 3C + 3A = 7, find the solution of a + B + C
19. 2a-b-(-3a)+2b-(-3c)-|a|-|b|+|c| Just simplify
20. N is the number in 4,6,8,12,16,18_______ When √ N and √ 2 are quadratic radicals of the same kind What's in the blank? I don't understand the blank. I understand what you say