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This is the use of the cross method.
Split the coefficient of x square 6 into a certain multiplied by a certain one, generally 6 is used in a combination of 3 * 2, not a combination of 1 * 6.
In the same way, the item 10 without x is also disassembled, split into a 5*2 combination, and then crossed.
2 5, so that the diagonal multiplication and addition is 3*5+2*2, and then the primordial child becomes (3x+2)*(2x+5)=0, and only one of the two terms is 0, so the two solutions of x come out, respectively, 3x+2=0, solve x, and 2x+5=0 x
The cross-cross method is used for the first term coefficient of x is not the conventional 2xy form, the splitting coefficient is to be practiced, no one can see it at once, 2*3 and 3*2 are different splitting methods, and if the question is -10, then bring a - sign when splitting.
Hey, it's so tiring to type, give it to me, original.
Note that the column of crosses is vertically columned, this topic is easy to make mistakes, and the vertical 3 and 2 are 6 split.
There is also the upstairs one that is wrong is -2 3. Remember that the ultimate goal of the cross split is to multiply the cross table diagonally and add it to get the coefficient of the x term.
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Left = (2x+5) (3x+2) = 0
So 2x+5=0 or 3x+2=0
x= or x= this is the factorization of the decomposition! With the criss-cross method! Or you can just use the discriminant formula of a quadratic equation!
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Formula for finding the root of a quadratic equation.
Let , then. <>
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6 times 2 equals 12
22+19x=0
So x is equal to minus 22/19
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First, 6 2 = 12 + 10 moved to the right. -10 12+19x=-10
Then move +12 to the right as well, = 19x=-22
Then -22 19=x x=-22 19=
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Divided into Youtan (2x-5) (3x-2) = 0
2x-5=0 gives x=5 2
3x-2=0 gets Zheng Pai x=2 3
The congratulatory is shouted with x=5 2, x=2 3
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Summary. 1÷(9x-6x-20)=
1÷(9x-6x-20)=
1÷(9x-6x-20)=
Kiss the night book is good and round ,1 (9x-6x-20)=,Solution Texas collapse x=<> The following is the process of detailed sock knowledge 1 (9x-6x-20)=1=This is not understood.
Kiss multiplication distributive law.
Got it. It's good to <> if you understand
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The range greater than zero is x5 6. First of all, using the cross-multiplication method, it is converted to (6x-5)(x+2)=0, and the two roots are -2 and 5 6, because this is a curve with an opening upward, and the image trapped by the dust nucleus to the left and 5 6 to the right is in the positive range, from which the result can be calculated.
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Summary. Hello! The answer to your question is x=6, and here we have 3x=18, and divide by 3 on both sides at the same time to get x=6
Hello! The answer to your question is x=6, and here we have 3x=18, and divide by 3 on both sides at the same time to get x=6
There are 9x-6x=20-2 on both sides, that is, 3x=18, and divide by 3 on both sides at the same time, to get x=6, you can send [ ] if you need anything
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Remove the nuclear silver number and Changyan merge similar items.
2x-40=0
Move the item. 2x=40
x=40/2
When moving items, pay attention to the change of symbols.
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Summary. Answer: 3640 6+(x-6)x10=40 6+(x-6)x10=
40×6+(x-6)x10=?I'm answering for you :
Hello! According to the information of the topic before the Muchun family, 40 6+(x-6)x10=? This is a simple calculation before answering the pants.
40×6+(x-6)x10=
40×6+(x-6)x10=
Answer: 3640 6+(x-6)x10=
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4x=20x=5
I'm glad to answer your questions and wish you progress in your studies! If you don't understand, you can ask!
If you recognize the chain of Shenke my shed potatoes, please click the [Choose as satisfied] button below, thank you!
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Solution: Move the item, get.
10x-6x=20
Merge similar items to obtain.
4x=20 is converted into 1 to get Liang Zhaoji. x=5
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