For x-values of -1, 0, and 1, (x-1)(x^3-x^2-x+1=x^4-1. does this mean the equation is an identity? explain your reasoning.

No. An equation is an identity if the left and right sides are equal for all possible values of the variable. You only checked 3 values, and that's not enough.

There's actually a particular case: if two polynomials of degree n are equal when you evaluate them in n+1 points, then they are the same polynomial. But in this case you have polynomials of degree 4, and you only checked 3 points.

answer: 3.26019516

step-by-step explanation:

570, the answer is 570, hope it