Solving Polynomial Equations
This page presents a comprehensive guide on solving various types of równania wielomianowe, offering przykłady with detailed solutions. The examples cover a range of polynomial equations, from simple to more complex ones, demonstrating different solving techniques.
Definition: Równania wielomianowe (polynomial equations) are equations where the variable is raised to different powers, and the goal is to find the values of the variable that make the equation true.
a) Solving 6x² + 2x² = 0
This equation simplifies to 8x² = 0, which has the solution x = 0.
Example: 6x² + 2x² = 0
8x² = 0
x² = 0
x = 0
b) Solving -x³ + 4x² = 0
This equation can be factored as -x²(x - 4) = 0, leading to solutions x = 0 or x = 4.
c) Solving x² + x = x + 2x⁴
Rearranging the equation to 2x⁴ - x² + x - x = 0 and factoring yields (x² - 2)(x² + 1) = 0, with solutions x = ±√2.
d) Solving x³ + 7x² + 12x = 0
Factoring out x gives x(x² + 7x + 12) = 0, with solutions x = 0 or x ∈ {-3, -4}.
e) Solving -2x + 8x³ - 5x² = 0
This cubic equation can be solved by factoring or using the cubic formula, yielding solutions including x = 0 and two other roots.
Highlight: When solving równania wielomianowe, always look for common factors first, then consider factoring or using appropriate formulas based on the degree of the polynomial.
The page also includes additional examples with more complex equations, demonstrating the use of the quadratic formula and other advanced techniques for solving higher-degree polynomial equations.
Vocabulary:
- Wielomian (Polynomial): An expression consisting of variables and coefficients involving only addition, subtraction, and multiplication operations.
- Pierwiastek równania (Root of an equation): A value of the variable that satisfies the equation.
This comprehensive guide serves as an excellent resource for students preparing for exams or looking to improve their skills in solving równania wielomianowe zadania.
