1. Решите уравнение.
1.) х*4+2х*2-8=0
2.) х*2 +7х/х+8=8/х+8
2. Докажите тождество.
3/2а-3-8а*3-18а/4а*2+9*(2а/4а*2-12а+9-3/4а*2-9)=-1
3. Посторойте график функции.
у=1)х*2, если х-менише или равно-1 ///2)1/х, если х-больше-1
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