Tham KY's answer to Wendy's Secondary 3 A Maths question.
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Date Posted:
6 years ago
Why did you factorise out a-2
When you need to find the roots of an equation, you need to factorise the equation.
a^3 is the highest order, we expect the eqn can be factorise into ( )( )( )=0 and get three real roots. But after the long division, we can only get (a-2)(a^2...).
a^3 is the highest order, we expect the eqn can be factorise into ( )( )( )=0 and get three real roots. But after the long division, we can only get (a-2)(a^2...).
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