Ответ:
21х+25=121-66х+9х^2
9х^2-87x-96=0
D=7569+ 3456=11025
x1=87+105/18=10 2/3
x2=87-105/18=-1
y=x^3-1
x^3-1=0
x=1
S=интеграл1 0(х^3-1)dx=x^4/4-x|1 0=1/4-1-0=-3/4
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Ответ:
21х+25=121-66х+9х^2
9х^2-87x-96=0
D=7569+ 3456=11025
x1=87+105/18=10 2/3
x2=87-105/18=-1
y=x^3-1
x^3-1=0
x=1
S=интеграл1 0(х^3-1)dx=x^4/4-x|1 0=1/4-1-0=-3/4