factor completely 25x^2-y^2-6y-9

factor completely 25x^2-y^2-6y-9
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1 Answer

=25y^2 -(y^2+6y+9)

=(5y)^2 -(y+3)^2

=(5y +y+3)(5y -y-3)

=(6y+3)(4y-3)
by Level 5 User (12.9k points)

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