What is expand (2+sqrt(5))(1-sqrt(5)) ?

The solution to expand (2+sqrt(5))(1-sqrt(5)) is -3-sqrt(5)

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expand (2+sqrt(5))(1-sqrt(5))

expand

(2 + 5) (1 - 5)

- 3 - 5

Solution steps

(2 + 5) (1 - 5)

Apply FOIL method

(2 + 5) (1 - 5) : - 3 - 5

= - 3 - 5

sinh (8 (t - 1)) u (t + 2)

ln (2 e + 3) \cdot (2 e + 3)

\frac{d ^{2}}{d t ^{2}} ((y) (t^{2} - y))

16 cos^{4} (2) (e^{4 x} \cdot 4 x^{4} + 4 x^{3} e^{4 x})

(A e^{t} + B e^{- t})^{2}

What is expand (2+sqrt(5))(1-sqrt(5)) ?
The solution to expand (2+sqrt(5))(1-sqrt(5)) is -3-sqrt(5)