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f(x)=x^3 + x^2 -10x +8 show that (x-1) is a factor of f(x), Factorise f(x) fully , sketch the graph of f(x)
f(1)=0
f(x)=(x-1)(x+4)(x-2)
DA
Answered by
Deborah A.
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Maths tutor
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