How to factor 9x^4-6x^2y^4+y^89x4−6x2y4+y8

Step-by-step explanation:

We'll assume the correct expression to be factored is

One must try to find out if the expression is a perfect square. To test it, we'll take the square root of the first and the last term. If they are exact, we'll procceed with the next step

Since both are exact, we'll test if the middle term is twice the product of both square roots:

We confirm the middle term equals the above expression. All tests confirm the original expression is

The required factoring is

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.