-Huanhuan and LeLe worked out an integral multiplication problem (2x + a) * (3x + b) together. Because Huanhuan copied the sign of a wrong in the first polynomial, he copied positive a Negative a, the result is 6x & # 178; + 11x-10. Because Lele omitted to copy the coefficient of X in the second polynomial, he copied 3x to x, and the result is 2x & # 178; - 9x + 10 [1]. Can you know the values of a and B in the formula? [2] Please work out the correct result of this integral problem

-Huanhuan and LeLe worked out an integral multiplication problem (2x + a) * (3x + b) together. Because Huanhuan copied the sign of a wrong in the first polynomial, he copied positive a Negative a, the result is 6x & # 178; + 11x-10. Because Lele omitted to copy the coefficient of X in the second polynomial, he copied 3x to x, and the result is 2x & # 178; - 9x + 10 [1]. Can you know the values of a and B in the formula? [2] Please work out the correct result of this integral problem

A = - 5, B = - 2, the original formula is 6x & # 178; + 19x + 10
It is known that the polynomial 3x & # 178; + px-2 = (x + Q) (3x-1) of X can be used to find the value of P and Q
A:
3x^2-px-2=(x+q)(3x-1)
3x^2-px-2=3x^2-x+3qx-q
-px-2=(3q-1)x-q
So:
-p=3q-1
Q=2
The solution is as follows
p=-5,q=2
The process of solving the equation {3x-2y = 2,5x-4y = 5}
3x-2y=2 ①
5x-4y=5 ②
① X 2
6x-4y=4 ③
③ - 2, get
x=-1
y=-5/2
[[solving fractional equation]]: X / (X-2) - (x-1) / (x ^ 2-5x + 6) = 2 / (x-3)
X / (X-2) - (x-1) / (X & # 178; - 5x + 6) = 2 / (x-3) ∵ X & # 178; - 5x + 6 = (X-2) * (x-3) ≠ 0 ≠ x ≠ 2, and X ≠ 3 is multiplied by (X-2) * (x-3) at the same time to get x (x-3) - (x-1) = 2 (X-2) x & # 178; - 3x-x + 1 = 2x-4x & # 178; - 6x + 5 = 0 (x-1) * (X-5) = 0, or x-5-x = 1, or x = 5
Reductive (x ^ 2-2x) / (x ^ 2-4x + 4)
=x(x-2)/(x-2)(x-2)=x/x-2
Solving the fractional equation: 1 / x + 5x / x + 3 = 5
What is 5x / x?
About 1-x ^ 2 / x ^ 2-3x + 2
（1-x^2）/（x^2-3x+2）
=（1-x）（1+x）/（1-x）（2-x）
=（1+x）/（2-x）
1-x^2/x^2-3x+2
=（1+x）（1-x）/(x-1)(x-2)
=(x+1)/(2-x)
Solve the equation 3x-1.2x = 9 8.8-4.4x = 4.42.25x4 + 0.3x = 12 13X + 5x13 = 169
3x-1.2x=9
1.8x=9
X=5
8.8-4.4x=4.4
4.4x=4.4
X=1
2.25X4+0.3x=12
9+0.3x=12
0.3x=3
x=10
13x+5X13=169
13x+65=169
13x=104
X=8
3x-1.2x=9
1.8x=9
X=5
8.8-4.4x=4.4
4.4x=4.4
X=1
2.25X4+0.3x=12
9+0.3x=12
0.3x=3
x=10
13x+5X13=169
x+5=13
X=8
.............
solve equations
3x-1.2x=9
1.8x=9
X=5
8.8-4.4x=4.4
2-x=1
X=1
2.25X4+0.3x=12
9+0.3x=12
0.3x=3
x=10
13x+5X13=169
x+5=13
X=8
If x ^ 2 + 4x-4 = 0, then the value of 3x ^ 2 + 12x-5 is_____ Decomposition factor 9a-a ^ 3=_____ .
x^2+4x-4=0,
x^2+4x=4
3x^2+12x-5
=3(x^2+4x)-5
=3*4-5
=12-5
=7
9a-a^3
=a(9-a^2)
=a(3-a)(3+a)
X + 5 = 4x-3 3 / 4x-2 = x + 1 6x + 5 = 3x-7 - 13X + 4 = - 4x-5 - 2 / 3x-3 = 5 / 4x + 2 is the equation, which needs to be shifted
x+5=4x-3
x-4x=-3-5
-3x=-8
x=8/3
3/4x-2=x+1
3/4x-x=1+2
-1/4x=3
x=-12
6x+5=3x-7
6x-3x=-7-5
-3x=-12
X=4
-13x+4=-4x-5
-9x=-9
x=-1
-2/3x-3=5/4x+2
-2/3x-5/4x=5
-23/12x=5
x=-60/23
1、3x=8
2、1/4x=-3
3、3x=-12
4、9x=9
5、(5/4+2/3)x=-5
23/12x=-5
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