Please help ASAP Which expressions are differences of squares? Select each correct answer. a^2+1 x^2−169 h^2−20 t^2−4

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asked Jul 14, 2018 21.9k views

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Chemi Adel · Answer 1 · 2018-07-18T01:12:47+0000

differnce is
a²-b²

frst one is not, that is sum
2nd one is, x²-13²
3rd on e is not, 20 is not a perfect square (but you could do h²-(√20)²)
4th one is t²-2²

2nd and 4th

Please help ASAP Which expressions are differences of squares? Select each correct answer. a^2+1 x^2−169 h^2−20 t^2−4

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