What is the coefficient of the square of a minus two times B, and how many times is it

What is the coefficient of the square of a minus two times B, and how many times is it

The coefficient of the square of a minus 2 times B is - 1 / 2, and the degree is 2 + 1 = 3

-What is the coefficient of B to the second power of a

-1

Rational number, addition, subtraction, multiplication, division, power mixed calculation
1.5/3+（－3/2）
2..|－6|－（－1）－|－5+3|
3.2.9 △ (- 3 / 4) + 9 and 10 / 1 × (- 0.75)
4. The fourth power of - 1 - (1-0.5) × 3 / 1 × {2 + (- 3) & sup2;}
We need to figure it out

1.1/6
two point five
3.-58/15-90*4/3=-1858/15
4.1-3/2*11=-31/11

X + 2Y = 3 - x + 3Y = 2

x+2y=3
-x+3y=2.
The sum of the two is 5Y = 5, so y = 1
Substituting it into Formula 1, we get x = 1

To solve the equations: 3 (X-5) = 3y-6 X-Y / 3-x + 2Y / 6 = 2
To solve the equations: 3 (X-5) = 3y-6 X-Y / 3-x + 2Y / 6 = 2

From (1), 3x-15 = 3y-6, that is, X-Y = 3 ③
2 (X-Y) - (x + 2Y) = 12, that is, x-4y = 12 ②
③ - 2, 3Y = - 9, y = - 3
Substituting y = - 3 into 3, we get x + 3 = 3, x = 0
∴{x=0 y=-3

X square + 2x / 3 + 1 ＞ 0 to calculate the value range of X

x²+2x/3+1/9-1/9+1>0
(x+1/3)²>-8/9
Certainly
So x is any real number

What is the value range of the quadratic function y = x minus 9 / 2x?

y>=0,x∈(－∞,＋∞）

If equation 2 minus 1 / x = x square minus 2x holds, then the value range of X is?

∵2-(1/x)=x^2-2x
∴x≠0
The result is: x ^ 3-2x ^ 2-2x + 1 = 0
(x+1)(x^2-3x+1)=0
The solution is: x = 1, x = (3 - √ 5) / 2, x = (3 + √ 5) / 2

If the square of x plus the square of Y minus 2x minus 2Y + 3 is greater than 0, calculate the value range

x^2+y^2-2x-2y+3>0
(x-1)^2+(y-1)^2+1>0
Any value of X and Y is greater than 0

Given that x square + 2x + a > 0 is constant, find the value range of A

The formula can be converted to y = (x + 1) ^ 2 + A-1 > 0 constant, because y = (x + 1) ^ 2 is a parabola with the opening upward and (- 1,0) as the vertex, so to ensure that the formula Y > 0 constant, then A-1 > 0 must be constant. So a > 1