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Which products result in a perfect square trinomial? Check all that apply. (-x+9)(-x-9) (xy + x)(xy + x) (2x-3)(-3+2x) (16- x²)(x2 – 16) (4y? +25)(25+4y?)

Which products result in a perfect square trinomial? Check all that apply. (-x+9)(-x-9) (xy + x)(xy + x) (2x-3)(-3+2x) (16- x²)(x2 – 16) (4y? +25)(25+4y?)
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Which products result in a perfect square trinomial? Check all that apply.

(-x+9)(-x-9)
(xy + x)(xy + x)
(2x-3)(-3+2x)
(16- x²)(x2 – 16)
(4y? +25)(25+4y?)

asked
User Mikhail Olshanski
by
7.7k points

1 Answer

4 votes
(-x+9)(-x-9) - prefect square
(xy + x)(xy + x) - perfect square
(2x-3)(-3+2x) - not a perfect square
(16- x²)(x2 – 16) - not a perfect square
(4y? +25)(25+4y?) - not a perfect square
answered
User Mmagnuski
by
8.7k points
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