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Sec 3/4 E Math T01-Q02 - Factorising and solving a quadratic equation
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Sec 3/4 E Math T01-Q02 - Factorising and solving a quadratic equation
Secondary 3
Original parallel to Sec3&4 E Math FA
Factorise \(x^2+x-20\) completely.
Hence, solve the equation \(x^2+x-20=0\).
Solution:
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Answer:
(a) \((x-4)(x+5)\); (b) \(x=4\) or \(x=-5\).
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