Verified answer

ОДЗ:

4x^2+9x+5>=0

D=81-80=1

x1=-1

x2=-1.25

(=-00; -1.25] U [-1 +00)

2x^2+x-1>=0

D=1+8=9

(2x-1)(x+1)>=0

x=(-00 -1] U [1/2 +00)

x^2-1>=0

(х-1)(х+1)>=0

x=(-00 -1] U [1 +00)

Общее ОДЗ:

х={-1} U [1 +00)

4x^{2} +9x+5=3x^{2}-2+2

-2

-2

4(2x^{4}+x^{3}-3x^{2}-x+1)=x^{4}+49+64x^{2}+14x^{2}+16x^{3}+11x

8x^{4}+4x^{3}-12x^{2}-4x+4=x^{4}+49+78x^{2}+16x^{3}+112x

7x^{4}-12x^{3}-90x^{2}-116x-45=0

7x^{4}+7x^{3}-19x^{3}-19x^{2}-71x^{2}-71x-45x-45=0

7x^{3}*(x+1)-19x^{2}*(x+1)-71x*(x+1)-45(x+1)=0

(x+1)(7x^{3}-19x^{2}-71x-45)=0

(x+1)(7x^{3}+7x^{2}-26x^{2}-26x-45x-45)=0

(x+1)(7x^{2}*(x+1)-26x*(x+1)-45(x+1)=0

(x+1)^{2}*(7x^{2}-26x-45)=0

(x+1)^{2}*(7x^{2}+9x-35x-45)=0

(x+1)^{2}*(x(7x+9)-5(7x+9))=0

(x+1)^{2}*(7x+9)*(x-5)=0

(x+1)^{2}=0

x=-1

7x+9=0

x=- - не удовлетворяет ОДЗ

x-5=0

x=5

Ответ:

x=5

x=-1

Verified answer