How to calculate fraction in grade two mathematics of grade two

How to calculate fraction in grade two mathematics of grade two

For example, if 1 / (X-5) is meaningful, it must satisfy that X-5 is not zero, that is, X cannot be 5. Meaningless is that X-5 = 0, that is, x = 5 is meaningless

When the letter in the fraction satisfies what conditions, the fraction is meaningful: x + 1 / X-1

Denominator cannot be 0, X-1 cannot be equal to 0, and X cannot be equal to 1

Expand the letters X and Y in fraction (9x) / (2x? 2 + 3Y? 2) by 5 times. What happens to the value of fraction

45x / (2 × 25X ^ + 3 × 25y ^) = 45x / (50x ^ + 75y ^) = 9x / (10x ^ + 15y ^) = one fifth of 9x / 2x ^ + 3Y ^), that is, the value of fraction is reduced by five times
(^ is the square meaning, can't type the mathematical symbol, I'm sorry, write the algebraic formula before / on the numerator, and the following on the denominator)

Is x 2 / x a fraction? Satisfies the definition that a and B are integers and B contains letters, but after reduction, it is X. is x a fraction

In x 2 / x, X must be limited to X ≠ 0. If it is reduced to x, x will not be limited to 0

Given the fraction x-a / 2x + B, when x = 4, the fraction has no meaning; when x = - 3, the value of fraction is zero. Find the value of fraction a + B / a-2b

According to the meaning of the title:
When x = 4, the denominator 2x + B = 0
∴8+b=0
b=-8
When x = 0
∴-3-a=0
a=-3
∴（a+b）/（a-2b）
=（-3-8）/（-3+16）
=-11/13
I'm very happy to solve the above problems for you, and hope it can be helpful to your study

Given the fraction (2x + B / x-a), when x + - 1, the value of the fraction is 0; when x = - 7, the fraction is meaningless. Find the square root of b-a Given the fraction (2x + B / x-a), when x + - 1, the value of the fraction is 0; when x = - 7, the fraction is meaningless. Find the square root of b-a

To make the fraction (2x + b) / (x-a) meaningful, we must make: x-a ≠ 0, that is, X ≠ A is known. When x = - 7, the fraction has no meaning, then: a = - 7 if the fraction (2x + b) / (x-a) = 0, then: 2x + B = 0, the solution is: x = - B / 2, when x = - 1, the value of fraction is 0, then: - B / 2 = - 1, the solution is: B =... "

If no matter what real number x is, fraction 1 X2 − 2x + m is always meaningful. Find the value range of M

From the meaning of the title: x2-2x + m ≠ 0,
If y = x2-2x + m,
Then the parabola has no intersection with X axis, △ 0,
4-4m＜0，
M > 1

If two parts of the fraction (2x-6) have no meaning, then the value of X is the known fraction (x + 1) (the square of x-1) is 0, then the value of X is

1、2x-6=0
X=3
2、x²-1=0
x+1≠0
∴x=1

When it comes to the value of fraction. X, the fraction is meaningful 1/2x+1 When x is taken, the fraction is meaningful Because I have just learned, I don't know how to write the process

2X + 1 is not equal to 0
therefore
X is not equal to half

Second grade mathematics, fraction meaningless, what do you mean

When the denominator polynomial or binomial is zero, the fraction is meaningless