Determine if the polynomial x4−2x2y2+y4 is a perfect square. If so, factor it.
To confirm this, expand (x2−y2)2 to get x4−2x2y2+y4, which matches the original polynomial.
Step 1 :First, recognize that the given polynomial has the form a2−2ab+b2, which is the square of a binomial.
Step 2 :In this case, a=x2 and b=y2. Therefore, the polynomial can be written as (x2−y2)2.
Step 3 :To confirm this, expand (x2−y2)2 to get x4−2x2y2+y4, which matches the original polynomial.