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Anonymous users2024-02-11Let me explain them one by one.
What is Equation? An equation with unknowns is called an equation.
How do you solve the equation? It can be shifted according to the balance principle (i.e., how much is added to the left side of the equation and how much is added to the right) or according to the relationship between the parts of the equation (e.g., according to the dividend divisor = quotient, the divisor = dividend quotient is obtained).
What is the solution of the equation? The value of an unknown that equalizes the left and right sides of the equation is called the solution of the equation. (i.e., this number equalizes the left and right sides of the equation).
What is Equation Solution? There is no such thing as an "equation solution", it should be an equation, right?
Solving an equation: The process of finding the solution of an equation. (is a computational process).
How is it checked? Substitute the solution of the equation into the original equation, calculate the left and right sides of the equation respectively, and see if the value on the left is equal to the value on the right.
Example: 5+x=9
5+x-5=9-5………Balance principle (or x=9-5 ......Shift terms according to the relationship between the parts of the equation).
x=4 ……The solution of the equation.
The above process is called solving the equation.
Test: Substituting x=4 into the original equation.
Left = 5 + 4 = 9, right = 9
Because the left side of the equation = the right side.
So x=4 is the solution of the original equation.
Answer: <>
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Anonymous users2024-02-10Please tell me the title!
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Anonymous users2024-02-09The answer to the first question is 17x17, the second question is not understood, the third answer is 38 19, and the fourth answer is 8 112
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Anonymous users2024-02-082 (remove the brackets to get 20-y=.)
Move the term, get -y+
Merge and got. y = 442 parts.
3x+5 = 2x-1 of 3
Multiply both sides of the equation by 6 at the same time to get 3 (3x+5) = 2 (2x-1) without parentheses, and get 9x+15=4x-2
Shift, 9x-4x=-2-15
Merge to get 5x=-17
x=-17/5
x-3/5 = 3x+4/15
Multiply both sides of the equation by 15 at the same time to get 3(x-3)=3x+4 without parentheses, and get 3x-9=3x+4
Shift the term to get 3x-3x=4+9
0=13？(Looks like I got the question wrong.......)）
Let's do these questions first, I don't know if the meaning of the question is correct. I hope I can help you. If there is a misunderstanding, explain it to me, and I will change it.
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Anonymous users2024-02-07The factoring is as follows:
2x²+3x-2 = （2x-1）（x+2）
Your ** is incomplete, and you can't solve the equation.
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Anonymous users2024-02-06I can't see clearly, move the unknowns to the left, and the constants to the right.
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Anonymous users2024-02-056x square = 4x cubic 4x cubic 6x square = 1 2x 3=1 2x = 3 x=
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Anonymous users2024-02-04cos and sin on one side, the simplest and squared on both sides. Remember that cos square + sin square = 1
1. The equation is 2x+y=54, (2x)*y=144, so 2x, y are the two real roots of the equation x 2-54x+144=0, and the root formula can be obtained x1=27-3 65, x2=27+3 65, so x=(27-3 65) 2, y=27+3 65 or x=(27+3 65) 2, y=27-3 65. >>>More
The principle of shifting terms in equations is "If one term in the equation is moved from one side of the equal sign to the other, then the positive and negative properties of the term (plus or minus signs. >>>More
This question does not need to be solved with equations.
240 190) 2 25 (square centimeters) ......240 190 is to add the area of the two bottom surfaces, so, 25 is the area of the bottom surface. >>>More
Answer: The elimination method is to convert the duality into a unitary method, which is generally the addition and subtraction elimination method or the substitution elimination method. j
You should ask the first question, this does not need to solve the specific value, solve the expression form of cn about an, the ratio is a fixed value to prove it, <>