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balandron [24]
3 years ago
14

Determine the leading coefficient of the polynomial p, which has exactly three roots: -1, 1 and 2, and for which p(3) = 24 is tr

ue.
Mathematics
1 answer:
LuckyWell [14K]3 years ago
6 0

Answer:

The polynomial is x^3-2x^2-x+2

Leading coefficient is 1

Step-by-step explanation:

We need to determine the leading coefficient of polynomial p having roots

-1,1 and 2 and p(3)=24

Roots of polynomial are: -1,1,2

We can write them as:

x=-1, x=1, x=2

x+1=0, x-1=0, x-2=0

or:

(x+1)(x-1)(x-2)=0

Multiplying the terms to find the polynomial:

(x+1)(x-1)(x-2)=0\\(x(x-1)+1(x-1))(x-2)=0\\(x^2-x+x-1)(x-2)=0\\(x^2-1)(x-2)=0\\x^2(x-2)-1(x-2)=0\\x^3-2x^2-x+2=0

So, The polynomial is x^3-2x^2-x+2

The leading coefficient is the coefficient with highest power So, in polynomial we have highest power x^3 so, leading coefficient is 1

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