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Expansion of (x^2 - y^2)

If x^2 + 3 is...

Question

If x^2 + 3 is greater than equal to 0 and x^2+4 is greater than equal to zero then x belongs to:

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[x] =

the greatest integer less than or equal to

x,

(x) =

the least integer greater than or equal to

x,

[x]^{2} + (x)^{2} > 25

x

[x] =

the greatest integer less than or equal to

x

(x) =

the least integer greater than or equal to

x

[x]^{2} + (x)^{2} > 25

x

a \in (0, \frac{π}{2})

\sqrt{x^{2} + x} + \frac{{tan}^{2} α}{\sqrt{x^{2} + x}}

is always greater than or equal to

α ϵ [0, \frac{π}{2})

\sqrt{x^{2} + x} + \frac{{tan}^{2} α}{\sqrt{x^{2} + x}}

is always greater than or equal to

α \in (0, \frac{π}{2})

\sqrt{x^{2} + x} + \frac{{tan}^{2} α}{\sqrt{x^{2} + x}}

is always greater than or equal to

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