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When k =, the polynomial 3x ^ 2 - (K 1) XY + y ^ 2 about x y does not contain XY term
When k =, the polynomial 3x ^ 2 - (K 1) XY + y ^ 2 about x y does not contain XY term
Without XY term, the coefficient of XY term is 0
K-1 function K + 1
But it's simple
If K + 1, then k = - 1, the polynomial does not contain XY term
If k-1, then when k = 1, the polynomial does not contain XY term
3a-6 > 0, then the inequality 2x
3a-6>0
3a>6
a>2
a-2>0
2x-1
(a-2)x>-1
a-2>0
So x > - 1 / (A-2)
Given that the solution of inequality (2a-b) x + a-5b > 0 about X is x ＜ & nbsp; 107, then the solution of AX + b > 0 is ()
A. x＞ −35B. x＜− 35C. x＞ 35D. .x＜ 35
The solution of (2a-b) x ＞ - A + 5b, ∵ inequality (2a-b) x + a-5b ＞ 0 is x ＜ & nbsp; 107, ∵ 2a-b ＜ 0, and − a + 5b2a − B = 107. By sorting out the equation, B = 35A, substituting 2a-b ＜ 0, 2a-35a ＜ 0, the solution set ax + 35A ＞ 0 of a ＜ 0, ∵ ax + B ＞ 0, that is, X ＜ - 35
The inequality (2a-b) x + a-5b > 5B about X is known
On the inequality of X (2a-b) x + a-5b0, B / a = 17 / 40,
The solution set of inequality ax > b about X is x > 17 / 40
Given that the solution set of inequality (2a-b) x + a-5b > 0 about X is x0, what is the solution set?
Solution inequality: (2a-b) x + a-5b > 0 the solution set is: X
It is known that the solution set of inequality (2a-b) x > 5b-a about X is XB, and the solution set of inequality (2a-b) x > 5b-a is?
(2a-b)X>5b-a
Because its solution set is X
X
The solution set of (2a-b) x > 5b-a is that x becomes
Solving inequality 2x-1 / 3x + 1 is less than 2
3x+1/2x-1＜2
3x+1＜4x-2
3＜x
That is, x > 3. Do you understand?
Solve the inequality 2x-1 / 3x + 1 ＜ 2
Please pick ~
Solving the system of inequalities 3x-5
Solve inequality 1 to get X "5"
Solve inequality 2 and get - 3 ﹣ X
So - 3 "X" 5
,
Given that 2A ^ y + 5B ^ 3x and - 3A ^ 2xb ^ 2-4y are of the same kind, then the values of X and y are
It is known that y + 5 = 2x;
3x=2-4y
The solution of the above two equations is x = 2, y = - 1
Hope the answer is satisfactory
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