Question

Мне нужна помощь 15665532222

Answer 1

2^x(1÷2+1÷4-3÷8)>/3×2^4÷x
2^x>/2^4÷x×2^3
2^x>/2^(4+3x)÷x
x>/(4+3x)÷x
x^2-3x-4>/0
D=9+16=25
X1=(3-5)÷2=-1
X2=(3+5)÷2=4
(X+1)(X-4)>/0
X1>/-1
X2>/4

Answer 2

2^(x-1)+2^(x-2)-3•2^(x-3)≥3•4^(2/x)
2^(x)*(1/2+1/4-3/8)≥3•2^(4/x)
2^x*(3/8)≥3•2^(4/x)
2^(x-3)≥2^(4/x)
x-3≥4/x
x-3-4/x≥0
(x²-3x-4)/x≥0;x≠0
(x-4)(x+1)/x≥0
___-__-1___+___0____-_____4___+__
x€[-1;0)U(0;4]