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A linear equation is defined as an equation that contains only the first power of the unknown quantity.

For example, 5x - 3 = 7 where "x" is the unknown quantity is a linear equation.

If an equation contains an unknown quantity having a higher power than 1, then the equation ceases to be a linear equation.

For example, 3x2 + 5x + 7 = 0 is a non linear equation known as a quadratic equation, because the unknown quantity "x" has a power of 2.

Similarly, equations containing unknowns with higher powers such as x3, x7, x12 are all non linear equations.

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15y ago

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