If the value of the algebraic expression 2x 2 + X + 4 is 7, then the value of the algebra 4x 2 + 2x + 1 is

If the value of the algebraic expression 2x 2 + X + 4 is 7, then the value of the algebra 4x 2 + 2x + 1 is

If the value of the algebraic formula 2x? + X + 4 is 7, then the value of the algebra 4x? + 2x + 1 is 2x? + x = 7 - 4 = 3? 4x? + 2x + 1 = 2 (2x? + x) + 1 = 2 x 3 + 1 = 7, benefactor, you are a marvellous talent in the Wulin. If you concentrate on your study, you will become a martial arts genius in the future

Given that x? - 4x-1 = 0, find the value of the algebraic expression (2x-3) 2 - (x + y) (X-Y) - y (2) It is known that 9x? 2 + kxy + 4Y? Is a complete square formula

（2x-3)²-（x+y）（x-y）-y²
=4x²-12x+9-x²+y²-y²
=3x²-12x+9
=3x²-12x-3+12
=3(x²-4x-1)+12
=12
2、k²-4×9×4=0
k²=144
ν k = 12 or K = - 12

If the value of the algebraic expression x? 2x - 2x is 6, then what is the value of the algebraic expression 2x? - 4x-1?

x²-2x=6 x²-2x-6=0 (x-1)²=7
2x²-4x-1=2（x-1)²-3=2x7-3=11

If the value of the algebraic expression 2x2 + 3x + 7 is 8, then the value of the algebraic expression 4x2 + 6x + 15 is______ .

According to the meaning of the title
2x2+3x+7=8，
∴2x2+3x=1，
∴4x2+6x+15=2（2x2+3x）+15=2×1+15=17．
So the answer is 17

If + 3Y + 6y is the algebra value of 2x 2-8, then the value of + 6y + 6y is the value of 2x 2-8 A. 40 B. 30 C. 15 D. 25

∵2x2+3y-7=8，
∴2x2+3y=15．
4x2+6y+10=2（2x2+3y）+10，
=2×15+10，
=40．
Therefore, a

When x = 0___ The values of - 4x + 7 and 2x + 6 are opposite to each other

From the meaning of the title: (- 4x + 7) + (2x + 6) = 0,
It is concluded that: - 2x + 13 = 0,
The solution is: x = - 13
2．
So the answer is: - 13
2．

The values of the algebraic expressions - 4x + 7 and 2x + 6 are opposite to each other emergency

It can be described by equation as
-4x+7=-（2x+6）

When x = 0___ The algebraic expression 2x + 3 has the same value as 6-4x

According to the meaning of the title, 2x + 3 = 6-4x,
The solution is: x = 1
2．

It is known that the equation (2x-a) / 3 minus (x-a) / 2 on X has the same solution as equation 3 (X-2) = 4x-5, so find the value of A

3（x-2）=4x-5
3x - 6 = 4x - 5
x= -1…………………… (1)
Replace ① into (2x-a) / 3 - (x-a) / 2 = X-1
(2 × - 1-A) / 3 - (- 1-A) / 2 = - 1-1 = - 2 was obtained
Simplification: (- 2-A) / 3 + (1 + a) / 2 = - 2
If both sides are the same × 6, 2 (- 2-A) + 3 (1 + a) = - 12
Simplification: - 4 - 2A + 3 + 3A = - 12
The solution is: a = - 11

It is known that the one-dimensional first-order equation about X is equal to x minus 1, and the same solution exists in equation 3 (X-2) = 4x-5. Find the solution of A

First, we find the solution of 3 (X-2) = 4x-5
3X-6=4X-5
X=-1
2 / 3x-a-x / 2-A = X-1
-2/3-a+1/2-a=-2
Finally, x = - 11 / 12 is obtained