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## Homework Statement

Solve the inequation [tex](x^2+3x+1)(x^2+3x-3)\ge 5[/tex]

## The Attempt at a Solution

on opening the brackets i got

[tex]x^2(x^2+3x-3)+3x(x^2+3x-3)+1(x^2+3x-3)\ge 5[/tex]

[tex]x^4+3x^3-3x^2+3x^3+9x^2-9x+x^2+3x-3-5\ge 0[/tex]

[tex]x^4+6x^3+7x^2-6x-8\ge 0[/tex]

am i right??

after that what should i do??