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Use synthetic division to decide if k is a zero?

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Use synthetic division to decide whether the given number k is a zero of the given polynomial function.

-3; f(x)=-x^4+3x^2-x+1

please help me. thank you

asked Apr 8, 2014 in CALCULUS by anonymous

1 Answer

0 votes

image

By using synthetic division

First write down the coefficients in descending order of degrees of terms and put zero under imageand then add up.

image

Now multiply the carried number with image and place under 0 and then add up to zero.

image

Now multiply the carried number with image and place under 3 and then add up to 3.

image

Now multiply the carried number with image and place under image and then add up to image.

image

Now multiply the carried number with image and place under 1 and then add up to 1.

image

 

Since the remainder is not zero, image is not a zero of the polynomial.

answered Apr 9, 2014 by Johncena Apprentice

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