## The condition that (x + 1) under the root sign multiplied by (x-1) = under the root sign (x square - 1) holds

∴x+1≥0；

x≥-1;

x-1≥0;

x≥1;

x ²- 1≥0;

X ≥ 1 or X ≤ - 1;

The condition is x ≥ 1

I'm glad to answer your questions. Skyhunter 002 answers your questions

If you don't understand this question, you can ask,

### If root sign (1-2a) square = 1-2a Then the value range of a is

Root sign (1-2a) square = |1-2a| = 1-2a

So 1-2a ≥ 0

a≤1/2

### Given a = 1 / (root sign 5 + 2), find the value of square / (A-1) of 1-2a + a - square-2a + 1 / (square-a of a)

a=1/(√5+2)=(√5-2)/(√5+2)(√5-2)=√5-2;

∴a-1=√5-3＜0

Original formula = (A-1) ²/ (a-1)-√(a-1) ²/ a(a-1)

=a-1-1/a

=√5-2-1-1/(√5-2)

=√5-3-√5-2

=-5;

Hello, I'm glad to answer your questions. Skyhunter 002 answers your questions

If you don't understand this question, you can ask. If you are satisfied, remember to adopt it

If you have any other questions, please adopt this question and click to ask me for help. It's not easy to answer, please understand, thank you

I wish you progress in your study

### If the root sign a square - 2A + 1 = 1-A and the root sign a square + 4A + 4 = a + 2, find the absolute value of a + the square of the root sign (1-A)

Root sign a square - 2A + 1 = 1-A, it can be seen that a ≤ 1;

Root sign a square + 4A + 4 = a + 2, it can be seen that a + 2 ≥ 0, that is, a ≥ - 2

According to the above two conclusions, we have - 2 ≤ a ≤ 1

Then, the absolute value of a + the square of the root sign (1-A) = |a| + (1-A). The answer is as follows:

When - 2 ≤ a ≤ 0, the original formula of the question is equal to - A + 1-A = 1-2a;

When 0 ≤ a ≤ 1, the original formula of the question is equal to a + (1-A) = 1

### Is the image of positive scale function y = KX, (k is not equal to 0) fixed through the origin (0,0) and point (1, K)~

yes

Because if you bring in x = 0 and x = 1 respectively, you can get the value of Y, no matter why K is 0 and K

### If the positive scale function y = KX, the distance from a point on the image to the x-axis is 3 times the distance from the point to the y-axis, then the value of K is___

three