Spark Spark
  • 28-05-2024
  • Mathematics
High School

Factor the following polynomial completely:

\(-x^2y^2 + x^4 + 9y^2 - 9x^2\)

Answer :

apologiabiology apologiabiology
  • 15-04-2024
move the pure terms to outside

x^4-9x^2-x^2y^2+9y^2
grop
(x^4-x^2y^2)+(-9x^2+9y^2)
undistribute common factors
(x^2)(x^2-y^2)+(-9)(x^2-y^2)
reverse distributive
(x^2-y^2)(x^2-9)
factor perfect squares
(x-y)(x+y)(x-3)(x+3)


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