Lim Qian Ying's answer to Chee Hong Wong's Secondary 3 E Maths question.

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Lim Qian Ying
Lim Qian Ying's answer
3 answers (Tutor Details)
1st
Use calculator to find roots of equation A^2 + 4A - 357 = 0. A= -21 is rejected because question asks for positive number.
Chee Hong Wong
Chee Hong Wong
6 years ago
thanks