Math Problem Statement
حل المعادلات
Solution
The image contains the equation .
To solve this cubic equation, we can follow these steps:
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Factorization by grouping or trial and error for possible rational roots: The Rational Root Theorem suggests that any rational solution to the polynomial equation is a fraction , where is a factor of the constant term and is a factor of the leading coefficient . For , the possible rational roots are the factors of (constant term) divided by the factors of (leading coefficient). Therefore, the possible rational roots are .
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Testing possible roots:
- Testing : Since is a root, we can factor out of the polynomial.
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Synthetic division: Divide by using synthetic division:
1 & 1 & -6 & 11 & -6 \\ & & 1 & -5 & 6 \\ \hline & 1 & -5 & 6 & 0 \\ \end{array}$$ The quotient is $$x^2 - 5x + 6$$. -
Solve the quadratic equation : Factor the quadratic: Therefore, and .
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List all roots: The roots of the equation are .
If you have any questions or need further details, please let me know. Here are five questions you might ask next:
- How do you verify the roots of a polynomial equation?
- Can you explain the Rational Root Theorem in more detail?
- What other methods can be used to solve cubic equations?
- How does synthetic division work for polynomials?
- Can you show how to solve a cubic equation using the general formula?
Tip: When solving polynomial equations, always start by checking for possible rational roots using the Rational Root Theorem; it can significantly simplify the problem.
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Math Problem Analysis
Mathematical Concepts
Polynomial Equations
Cubic Equations
Rational Root Theorem
Synthetic Division
Formulas
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Theorems
Rational Root Theorem
Suitable Grade Level
Grades 10-12