Mathematics
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因数分解のやり方、教えていただきたいです🙏

DOは小等式を満たす。 4 sino cose + 2 sin 0 - 2 cos 0-1 (25in 0-1) (2 co 50 + 10 2 sin co

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✨ Best Answer ✨

4sinθcosθ+2sinθ-2cosθ-1
=2sinθ(2cosθ+1)-(2cos+1)
=(2sinθ-1)(2cosθ+1)

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