Solve where x² + y² = r and x + y = 3 (substituting)
In this lesson, we will solve simultaneous equations by substituting a linear equation into a quadratic equation. Examples include quadratics of the form x² + y² = r and x + y = 3, where r can be a square number.
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Lesson summary: Solve where x² + y² = r and x + y = 3 (substituting)
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