Question

Решите пожалуйста ,алгебра 8 класс

Answer 1

1
$1)(m-8)/5m *15m^2/(m-8)(m+8)=3m/(m+8)$
$2)a ^{-6} b^4/4c^2 *8c^3a^6/b^5=2c/b$
2
$2^5*2^6/2 ^{12} =1/2$
3
64x²+16x+1=0,x≠0
(8x+1)²=0
x=-1/8
4
1)(c-2)/(c+2) -2/(c-2)=(c²-4c+4-c²-2c)/(c-2)(c+2)=(4-6c)/(c-2)(c+2)=2(2-3c)/(c-2)(c+2)
2)2(2-3c)/(c-2)(c+2)*(c+2)/(2-3c)=2/(c-2)