Question

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Answer 1

it has 4 roots

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Answer 2

Answer: x^4-3x^2+2

then put x^2=t

so now this equation will look like t^2-3t+2=0

its roots are 1,2

and since both the roots are positive therefore

x^2=1,which implies x= +_1

and when x^2=2 then x=+_sqrt(2)

hence it has four real roots

Step-by-step explanation: