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factoring-16w² +50wz-21z² please help me solve
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factoring-16w²+50wz-21z²  please help me solve

User Ajay Varghese
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-16w^2+50wz-21z^2=-(16w^2-50wz+21z^2)=\\\\=-(16w^2-8wz-42wz-21z^2)=\\\\-[8w(2w-z)-21z(2w-z)]=-(2w-z)(8w-21z)
User Bobwise
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