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Starter. Solve the following linear equations:. 10 min. . a) x ? 2 = 3b) x 5 = 2c) 2x ?3 = 0. Solve the following quadratic equations d) x2 ? 9 = 0e) x2 16 = 0f) x2 5x 6 = 0g) x2 - 6x 4 = 0. Recall: the solutions of the quadratic equation ax2 bx c = 0 are given by-b ?(b2-4ac
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3. Motivation Complex numbers are much used in
Physics and Engineering: in wave functions for example
( very important for mobile phones)
In Mathematical Research: Chaos and Fractals
11. Complex numbers
12.