Question

find the value of p(x)=2x3+x2-x-1 at x=-2​

Answer 1

The answer of question is -1.

Answer 2

Answer:

Step-by-step explanation:

Step by Step Solution

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Reformatting the input :

Changes made to your input should not affect the solution:

(1): "x2" was replaced by "x^2". 2 more similar replacement(s).

Step by step solution :

STEP

1

:

Equation at the end of step 1

((((x4) - 2x3) - x2) - 2x) + 1 = 0

STEP

2

:

Polynomial Roots Calculator :

2.1 Find roots (zeroes) of : F(x) = x4-2x3-x2-2x+1

Polynomial Roots Calculator is a set of methods aimed at finding values of x for which F(x)=0

Rational Roots Test is one of the above mentioned tools. It would only find Rational Roots that is numbers x which can be expressed as the quotient of two integers

The Rational Root Theorem states that if a polynomial zeroes for a rational number P/Q then P is a factor of the Trailing Constant and Q is a factor of the Leading Coefficient

In this case, the Leading Coefficient is 1 and the Trailing Constant is 1.

The factor(s) are:

of the Leading Coefficient : 1

of the Trailing Constant : 1

Let us test ....

P Q P/Q F(P/Q) Divisor

-1 1 -1.00 5.00

1 1 1.00 -3.00

Polynomial Roots Calculator found no rational roots

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