What is expand v(2,-1)f(1,-1) ?

The solution to expand v(2,-1)f(1,-1) is 2vf,1,-2vf,1-1*1*vf,1*1

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expand v(2,-1)f(1,-1)

expand

v (2, - 1) f (1, - 1)

2 v f, 1, - 2 v f, 1 - 1 \cdot 1 \cdot v f, 1 \cdot 1

Solution steps

v (2, - 1) f (1, - 1)

= (2, - 1) (1, - 1) v f

Expand

(2, - 1) (1, - 1) : 2, 1, - 2, 1 - 1 \cdot 1, 1 \cdot 1

= v f (2, 1, - 2, 1 - 1 \cdot 1, 1 \cdot 1)

Expand

v f (2, 1, - 2, 1 - 1 \cdot 1, 1 \cdot 1) : 2 v f, 1, - 2 v f, 1 - 1 \cdot 1 \cdot v f, 1 \cdot 1

= 2 v f, 1, - 2 v f, 1 - 1 \cdot 1 \cdot v f, 1 \cdot 1

(1 + x^{\frac{4}{3}}) (1 - x^{\frac{2}{3}})

(2 t - 1) (t^{4} + t) + sin (π t) (2 t - 1)^{2}

\frac{x ^{2} + 4}{( x + 2 ) ^{2}}

\frac{- 1 + 2 sin ( x )}{( sin ( x ) - 2 ) ^{2}}

(2 + i)^{6}

What is expand v(2,-1)f(1,-1) ?
The solution to expand v(2,-1)f(1,-1) is 2vf,1,-2vf,1-1*1*vf,1*1