Exercise
$144-72x^2+9x^4$
Step-by-step Solution
Learn how to solve factor by difference of squares problems step by step online. Factor the expression 144-72x^29x^4. The trinomial 144-72x^2+9x^4 is a perfect square trinomial, because it's discriminant is equal to zero. Using the perfect square trinomial formula. Factoring the perfect square trinomial. Factor the polynomial \left(3x^{2}-12\right) by it's greatest common factor (GCF): 3.
Factor the expression 144-72x^29x^4
Final answer to the exercise
$9\left(x+2\right)^{2}\left(x-2\right)^{2}$