Решение:
15^2/3*3^2ц1/3 : 5^-1/3=(3*5)^2/3*3^7/3*5^1/3=3^2/3*5^2/3*3^7/3*5^1/3=3^(2/3+7/3)*5^(2/3+1/3)=3^9/3*5^1=3^3*5=27*5=135
Ответ: 135
1) f(x)=√(4-8x)
ООФ: 4-8x≥0, 8x≤4, x≤1/2, x∈(-∞,1/2]
2)f(x)=6/(12x-3)
ООФ: 12x-3≠0, 12x≠3, x≠1/4, x∈(-∞,1/4)∨(1/4,∞)
x² + 4x - 2 = (x² + 4x + 4) - 4 - 2 = (x + 2)² - 6 = (x + 2)² - (√6)² =
= (x + 2 + √6)(x + 2 - √6)