Question

Ребят помогите решить уравнение
³√x-2 + √x-1 = 1
Срочно нужно. Заранее большое спасибо.

Answer 1

$\sqrt[3]{x-2}+\sqrt{x-1}=1\\\\\sqrt[3]{x-2}=m,\Rightarrow x-2=m^{3},\Rightarrow x=m^{3}+2\\\\\sqrt{x-1}=n,\Rightarrow x-1=n^{2},\Rightarrow x=n^{2}+1\\\\\left \{ {{m+n=1} \atop {m^{3}+2=n^{2}+1}} \right.\\\\\left \{ {{n=1-m} \atop {m^{3}+2=(1-m)^{2}+1}} \right.\\\\\left \{ {{n=1-m} \atop {m^{3} +2=1-2m+m^{2}+1 }} \right.\\\\\left \{ {{n=1-m} \atop {m^{3}-m^{2}+2m=0}} \right.$

$\left \{ {{n=1-m} \atop {m(m^{2}-m+2)=0 }} \right. \\\\m^{2}-m+2-kornei. net\\\\m=0,\Rightarrow n=1-0=1\\\\\sqrt[3]{x-2}=0\\\\x-2=0\\\\x=2\\\\Otvet:\boxed{2}$