Definition of Nonlinear Equations

Equation whose graph does not form a straight line (linear) is called a Nonlinear Equation

More About Nonlinear Equations

In a nonlinear equation, the variables are either of degree greater than 1 or less than 1, but never 1.

Example of Nonlinear Equations

4x2 + 2y - 1 = 0 and x3 + 2x2 - 4xy - 1 = 0 are the examples of nonlinear equations.
is a nonlinear equation.

Video Examples: Linear and NonLinear Equations

Solved Example on Nonlinear Equations

Ques: Which of the following equations is not a linear equation?

  • A. 3x - 5 = 8x
  • B. 2 + 3x = 4
  • C. (x + 2)2 = 6
  • D. x = 1

Correct Answer: C


  • Step 1: An algebraic equation is said to be linear if the variable or variables in the equation are of first degree.
  • Step 2: In the equation (x + 2)2 = 6, x is raised to the power 2.
  • Step 3: So, (x + 2)2 = 6 is not a linear equation.

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