(x square - 4x + 4) parts (x square - 4Y Square) divided by (3x square + 6xy) parts (x + 2) It's the fraction multiplication and division in grade 2. I'll see the same thing later
x^2-4y^2 x+2
--------- ÷ ----------
x^2-4x+4 3x^2+6xy
x^2-4y^2 3x^2+6xy
= --------- × ----------
x^2-4x+4 x+2
(x+2y)(x-2y) 3x(x+2y)
= ------------ × ----------
(x-2)^2 x+2
The following can not be simplified, it can be seen that LZ gives a problem
Multiplication, not division?
Should x ^ 2-4x + 4 be x ^ 2 + 4x + 4 or x + 2 replaced by X-2?
The square of X + 4x + the square of X - 4Y multiplied by 3x square + 6xy parts x + 2
=(x+2y)(x-2y)/(x+2)² ×(x+2)/3x(x+2y)
=(x-2y)/3x(x+2)
=(x-2y)/(3x²+6x)
If the square of x minus 3x + 1 = 0, find the value of fraction 2x Λ 5-5x Λ 4-x Λ 3 + X Λ 2-6x / X Λ 2 + 1 Λ is the power, and the number after is the exponent of X
X ^ 2 + 1 = 3x
So 6x / (x ^ 2 + 1) = 2
The above formula = 2x ^ 3 (x ^ 2-3x + 1) + x ^ 2 (x ^ 2-3x + 1) - 2 = - 2
If the value of fraction (3x squared - 5x + 2 / 2-2x) is 0, what is the value of X?
∵ the value of fraction 2-2x / 3x? - 5x-2 is 0
ν 2-2x = 0 3x? - 5x-2 ≠ 0 (∵ on the denominator)
The solution is x = 1 x ≠ 2 x ≠ - 1 / 3
The value of X is 1
The square of 3x + 7 / X - 3x + 2 is converted into a partial fraction
The square of 3x + 7 / X - 3x + 2
=(x-1+2(x-2)-2)/(x-2)(x-1)
=(1/x-2)+(2/x-1)-2/(x-2)(x-1)
Given the fraction 3x + 7 / xsquare-3x + 2 = m / X-2 + n / X-1, what is the value of M and N
Double (x-1) (X-2)
3x+7=m(x-1)+n(x-2)
3x+7=(m+n)x-(m+2n)
So 3 = m + n
7=-(m+2n)
So m = 13, n = - 10
Process: when x = 3, the following fraction is meaningless: a.x squared X-2 b.x squared-9x c.x + 3x D. | x | + 3x of 3 Urgent
When the denominator is zero, the fraction is meaningless
The fraction X-5 / 3x + 5, when x takes what value, the fraction is meaningful
3x + 5 is not equal to 0, that is, X is not equal to - 5 / 3
What is the value of X? The following fraction makes sense 1 / 3
Fractions make sense when x is not equal to 0~
X = 3, the value of fraction x + A / 3x-b is 0, x = 1, it is meaningless to find ab
X = 3,3 + A / 9-b = 0, a = - 3, x = 1,1-3 / 3-B is meaningless. If B = 3, then AB = - 3 * 3 = - 9