Lim Jing Yu's answer to Nameless 's Secondary 3 A Maths question.
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The idea is to simplify 9^(x+1) into something similar to 3^x.
After which, substitute 3^x with an unknown y and solve using quadratic equations.
Lastly, substitute the unknown y back with 3^x and solve for all the solutions.
Gluck
After which, substitute 3^x with an unknown y and solve using quadratic equations.
Lastly, substitute the unknown y back with 3^x and solve for all the solutions.
Gluck
Date Posted:
7 years ago
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