Eric Nicholas K's answer to Kathy's Secondary 4 E Maths Singapore question.
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When in doubt, use the quadratic formula.
Date Posted:
5 years ago
To eliminate all the denominators, we can multiply the entire equation by the LCM of all the denominators (LCM in algebra form though). In (j), there is no common factor between x and x - 3, so the LCM is x (x - 3), which we multiply throughout. It's slightly better than writing the messy large fractions when you make the denominators the same.
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