7∛-4 = 2∛128x
7∛-4 = 2∛(2 * 64)x
7∛-4 = 2∛2 * ∛64 x
7∛-4 = 2∛2 * ∛4³x
7∛-4 = 2∛2 * 4x
7∛-4 = 8∛2 *x
x = (7∛-4) / (8∛2)
x = (7∛-2) / 8
2x + 3 = 6∛5 + x*∛320
2x + 3 = 6∛5 + x*∛(64 * 5)
2x + 3 = 6∛5 + x*∛64 * ∛5
2x + 3 = 6∛5 + x*∛4³ * ∛5
2x + 3 = 6∛5 + x*4 * ∛5
2x - 4x * ∛5 = 6∛5
x ( 2 - 4∛5) = 6∛5
x = 6∛5 / (2 - 4∛5)
2x+√2 = 1-√2x
2x + √2x = 1 - √2
x(2 + √2) = 1 - √2
x = (1 - √2) / (2 + √2)
x = [ (1 - √2)(2 - √2)] / [(2 + √2)(2 - √2)]
x = (2 - √2 - 2√2 + 2) / (4 - 2)
x = (4 - 3√2) / 2
x = 2 - 1,5√2