Question

Помогите решить уравнение 4/9x³-16x=0. 0,04x³-25x=0

Answer 1

$frac{4}{9 x^{3} }-16x=0 \ frac{4}{9 x^{3} }- frac{16x*9x^{3}}{9x^{3}} =0 \ frac{4-144x^{4}}{9x^{3}} =0 \ frac{4(1-36x^{4})}{9x^{3}} =0 \ left { {{1-36x^{4}=0} atop {9x^{3} neq 0}} right. \ left { {{36 x^{4} =1} atop {x neq 0}} right. \ left { {{x = sqrt[4]{frac{1}{36} }} atop {x neq 0}} right.$

0,04x³-25x=0
x(0,04x²-25)=0

x=0
0,04x²-25=0

x=0
0,04x²=25

x=0
x²=25/0,04

x=0
x²=25/0,04

x=0
x²=625


x=0
x=25