Предмет: Алгебра, автор: alena0smir

С объяснением пожалуйста

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Автор ответа: nik200101

0

Ответ:

Объяснение:

1)Тут нужно просто подставить m

получится: $\frac{((-3)*4)-5*(-3)^{2} }{2*(-3)-3} =\frac{-12-45}{-6-3} =\frac{-57}{-9} =6\frac{1}{3}$

2)Знаменатель в дроби не может быть равен нулю, поэтому 14+2x≠0

2x≠-14⇒x≠-7

3) $\frac{8a^{2}-2 }{8-16a} =\frac{2(4a^{2} -1)}{-8(2a-1)} =\frac{2(2a-1)(2a+1)}{-8(2a-1)} =\frac{2a+1}{-4} =-\frac{2a+1}{4}$

4) $\frac{4m-2}{m-2} +\frac{2m+2}{2-m} =\frac{4m-2}{m-2} -\frac{2m+2}{m-2} =\frac{4m-2-2m-2}{m-2} =\frac{2(m-2)}{m-2} =2$

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