Learn how to solve for undetermined coefficients in Quadratic Equations 

Finding undetermined coefficients (i.e. the letter which is usually a number) in a quadratic equation relies upon understanding the discriminant and performing good algebra. The questions may seem difficuly to understand at first but the technique itself is quite manageable. The key with this technique is trying a variety of practice questions as they can be presented in various ways. Any questions about this video drop us a message HERE.

Key Points

The discriminant tells us whether a quadratic equation will have 0, 1 or 2 real roots (solutions)

The terms ‘solutions’ and ‘roots’ are often used interchangeably

The discriminant rules work both ‘left to right’ and ‘right to left’

In finding undetermined coefficients we use the discriminant rules ‘right to left’

The terms ‘solution’, ‘solutions (plural)’ and ‘range of solutions’ indicate how your answer should look

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