the factors of x^3-2x^2-x+2
Answers
Answer:
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Answer:
(x – 1) (x + 1) (x- 2)
Step-by-step explanation:
A polynomial is an algebraic expression in which the exponent on any variable is a whole number. Polynomial’s degree is the highest or the greatest power of a variable in a polynomial equation.
A polynomial can be written as the product of its factors having a degree less than or equal to the original polynomial.
The process of factoring is called factorization of polynomials.
Given that x3 – 2x2 – x + 2
Grouping the 1st and 3nd terms together and the 2nd and 4th term together:
= x(x2 – 1) – 2(x2 – 1)
x3 – 2x2 – x + 2 = (x2 – 1) (x – 2)
Using the identity: a2 − b2 = (a + b) (a- b)
∴ (x2 – 1) = (x + 1)(x – 1)
= (x – 1) (x + 1) (x- 2)
∴ answer is (x – 1) (x + 1) (x- 2)
hope it helps