show that x=1 is a root of the polynomial 2x^3-3x^2+7x-6

Answers (1)

solution: Let f(x)= 2x^3-3x^2+7x-6 .       then ,

f(1)=2	imes1^3-3	imes1^3+7	imes1-6=2-3+7-6

Hence ,     x=1 is a root of polynomial f(x) .

 

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