Rahman XXV's answer to Kathy's Secondary 4 E Maths Singapore question.

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Rahman XXV
Rahman Xxv's answer
15 answers (A Helpful Person)
p=-7, q=16, f(x)=2x⁴-7x³+x²+16x-12
f(x)=(x-2)²(2x+3)(x-1)
just ask me if u don't get it