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1.) Find an algebraic expression...

1.) Find an algebraic expression for cot[arcsin(1/2x0]

2.) Simplify:

Hint* Diff. of 2 perfect squares

[(x+y)+1][(x+y)-1]

Please Show work and explain! Thanks a ton!

2.) Simplify:

Hint* Diff. of 2 perfect squares

[(x+y)+1][(x+y)-1]

Please Show work and explain! Thanks a ton!

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