Question

15 баллов

Решить уравнения:

Answer 1

$frac{1}{5} x - frac{1}{3} ( 1frac{1}{5} x - 27) = x + ( frac{1}{2} x + 3) \ frac{1}{5} x - frac{2}{5} x + 9 = x + frac{1}{2} x + 3 | times 10 | \ 2x - 4x + 90 = 10x + 5x + 30 \ - 17x = - 60 \ x = frac{60}{17} = 3frac{9}{17}$

${x}^{8} - frac{1}{49} {x}^{6} = 0 \ {x}^{6} ( {x}^{2} - frac{1}{49} ) = 0 \ {x}^{6} = 0 \ {x}^{2} - frac{1}{49} = 0 \ x1 = 0 \ x2 = frac{1}{7 } \ x3 = - frac{1}{7}$