21-08-2019
Mathematics

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how to solve this question

how to solve this question class=

Respuesta :

profarouk profarouk

21-08-2019

Good evening ,

______

Answer:

sin²x + cos²x = 1 for any value of x so the set of solutions is IR.

3x² + 4x + 5 = 0 have no solution because ∆= 4²- 4(3)(5) = 16 - 60 < 0.

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