To factor the expression y = x^4 - 10x^2 + 9, we can rewrite it as:
y = (x^2 - 9)(x^2 - 1)
Now, we can further factor each quadratic expression:
y = (x + 3)(x - 3)(x + 1)(x - 1)
Therefore, the factored form of the expression y = x^4 - 10x^2 + 9 is (x + 3)(x - 3)(x + 1)(x - 1).
To factor the expression y = x^4 - 10x^2 + 9, we can rewrite it as:
y = (x^2 - 9)(x^2 - 1)
Now, we can further factor each quadratic expression:
y = (x + 3)(x - 3)(x + 1)(x - 1)
Therefore, the factored form of the expression y = x^4 - 10x^2 + 9 is (x + 3)(x - 3)(x + 1)(x - 1).