Given a & sup2; + 4AB + 5B & sup2; - 2b + 1 = 0, find the arithmetic square root of - 2A + 4B

Given a & sup2; + 4AB + 5B & sup2; - 2b + 1 = 0, find the arithmetic square root of - 2A + 4B

If (| m | - 1) x & # 178; + (m-1) x + 2 = 0 is a linear equation with one variable, then the value of M is?
|M | means the absolute value of M
Because it is a linear equation of one variable, so the coefficient of quadratic term is 0, and the coefficient of primary term is not zero, so there is a difference
|m| - 1 = 0
m - 1 ≠ 0
The solution is m = - 1
m=-1
Because this equation is one variable linear equation, so (| m | - 1) = 0 and M-1 ≠ 0, so m = - 1 ask: Thank you very much!
Given that points c and D are the golden section points of line AB, and CD = 6cm, then AB =? Cm
A_____________ C______ D_______________ B ∵ points C.D are the two golden section points of line ab ∵ AC: BC = BC: ab = BD: ad = ad: ab = (√ 5-1) / 2 ∵ AC = BD = (√ 5-1) / 2BC = [(√ 5-1) / 2] & sup2; ab = (3 - √ 5) / 2 * ab ∵ CD = ab-2ac = ab - (3 - √ 5) AB = 6 (√ 5-2) AB = 6
The two lines of the golden section point ab.d
∴AC:BC=BC:AB=BD:AD=AD:AB=(√5-1)/2
∴AC=BD=(√5-1)/2BC=[(√5-1)/2]²AB=（3-√5)/2*AB
∴CD=AB-2AC=AB-(3-√5）AB=6
(√5-2)AB=6
∴AB=6/(√5-2)=6√5+12
To the power of 3a-4b = 4 A + to the power of 4 A
2^a=10, 16^b=5, ∴4^(a-4b)+2^(3a-8b) =[2^(2a)]/[16^(2b)] + [2^(3a)]/[16^(2b)] =(2^a)²/(16^b)² + (2^a)³/(16^b)² =100/25 + 1000/25 =4+40 =44
4^(a-4b)=4^a/256^b=(2^a)^2/(16^b)^2=10^2/5^2=4
2^(3a-8b)=8^a/256b=10^3/5^2=40
The result was 44
When m is a value, the equation (M & # 178; - 1) x & # 178; - (M + 1) x + 8 = 0 is a linear equation of one variable with respect to x?
If we want the equation (M & # 178; - 1) x & # 178; - (M + 1) x + 8 = 0 to be a one variable linear equation about X, the best way is to let the square of X disappear
M squared - 1 = 0, that is, M = 1 or M = - 1
However, the X term cannot be 0, that is, M + 1 is not equal to 0. When m = - 1, M + 1 = 0
M=1
Given that C and D are the golden section points of line AB, and CD = 6cm, then AB =? Cm
Because C and D are the golden section points of line AB, so AC = dB, let AC = DB = x, then (x + 6) / (2x + 6) = 0.618, calculate x to know ab=
It is known that the power a of 2 = 10, the power a-4b of 2 + the value 3a-8b of 2
Given that the power a of 2 is 10, the power 4b of 2 is 5, find the power a-4b of 4 + 3a-8b of 2
A-4b power of 4 = 2a-8b power of 2 = 4
Similarly, 3a-8b of 2 = 40
To sum up, 44
Make it clear what you mean.
Given the complete set I = R, the set a = {x | x square + 3x + 2 = 0}, B = {x | x square + (M + 1) x + M = 0}, if the complement of a ∩ B = an empty set, find the value of M
1△
2。 In fact, a closer look at the answer can come out.
According to "complement of a ∩ B = empty set", we can know that B is a subset of A.
1。 First, let a be a = {- 1, - 2}
2. So B is {- 1}, {- 2} or {- 1, - 2}
3. Substitute the values of X one by one, M = - 1 or - 6
Given that C and D are the golden section points of line AB, and CD = 1, find the length of ab
x-2(1-0.618)x=1
x=4.237
In the process of segmentation, it is divided at about 0.618 of the total length, which is called golden section. This point is called golden section.
A line segment is divided into two parts so that the ratio of one part to the whole length is equal to the ratio of the other part to this part. The ratio is an irrational number, which is expressed as √ 5-1 / 2 by fraction, and the approximate value of the first three digits is 0.618.
So,
0.618*2-1/1=1/AB
AB = 4.127... Expansion
In the process of segmentation, it is divided at about 0.618 of the total length, which is called golden section. This point is called golden section.
A line segment is divided into two parts so that the ratio of one part to the whole length is equal to the ratio of the other part to this part. The ratio is an irrational number, which is expressed as √ 5-1 / 2 by fraction, and the approximate value of the first three digits is 0.618.
So,
0.618*2-1/1=1/AB
AB = 4.127
The golden section point is 0.618, assuming that the distribution of points is a -- D -- C -- B
Then AC / AB = 0.618 and BD / AB = 0.618
So AC + db-ab = DC = 1
0.618AB+0.618AB-AB=1
AB=1/0.236=4.237
Given a2-2a + B2 + 4B + 5 = 0, find the value of (a + b) 2012
∵ a2-2a + B2 + 4B + 5 = (A-1) 2 + (B + 2) 2 = 0, ∵ A-1 = 0, B + 2 = 0, that is, a = 1, B = - 2, then the original formula = (1-2) 2012 = (- 1) 2012 = 1