kamerling said:2x^2 − 12x is not the same as 2(x-3)^2
The first step is to identify what variable or variables you are trying to find. Then, use the given information and any known equations or rules to manipulate the equation until the unknown value(s) is isolated on one side. Finally, use algebraic techniques such as substitution or elimination to solve for the unknown value(s).
No, it is important to use appropriate methods for solving equations. For simple linear equations, basic algebraic techniques such as addition, subtraction, multiplication, and division can be used. For more complex equations, it may be necessary to use more advanced techniques such as factoring, completing the square, or using the quadratic formula.
Yes, as long as there are enough equations and information given to solve for all the unknown values. This is known as a system of equations and can be solved using algebraic techniques such as substitution or elimination.
If you are solving a real-world problem, it is important to check if the negative value makes sense in the context of the problem. If it does not, then the negative value is likely an extraneous solution and should be discarded. If you are solving a mathematical equation, then the negative value can be considered a valid solution.
To check your solution, you can substitute the value back into the original equation and see if it satisfies the equation. If it does, then your solution is correct. Alternatively, you can also graph the equation and see if the point of intersection matches your solution.