(acos(x)^2-1)*1/(sqrt(1-x^2)) если x=2 (упростите выражение)

$$frac{{acos}^{2}{left (x right )} – 1}{sqrt{- x^{2} + 1}}$$

$$frac{{acos}^{2}{left (x right )} – 1}{sqrt{- x^{2} + 1}}$$

(acos((2))^2 – 1)/sqrt(1 – (2)^2)

$$frac{{acos}^{2}{left ((2) right )} – 1}{sqrt{- (2)^{2} + 1}}$$

(acos(2)^2 – 1)/sqrt(1 – 2^2)

$$frac{{acos}^{2}{left (2 right )} – 1}{sqrt{- 4 + 1}}$$

-i*sqrt(3)*(-1 + acos(2)^2)/3

$$- frac{sqrt{3} i}{3} left({acos}^{2}{left (2 right )} – 1right)$$

(1.0 – x^2)^(-0.5)*(-1.0 + acos(x)^2)

$$- frac{sqrt{- x^{2} + 1}}{x^{2} – 1} left({acos}^{2}{left (x right )} – 1right)$$

(1 + acos(x))*(-1 + acos(x))
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/ -(1 + x)*(-1 + x)

$$frac{left({acos}{left (x right )} – 1right) left({acos}{left (x right )} + 1right)}{sqrt{- left(x – 1right) left(x + 1right)}}$$