What is expand (sin(x)-1)(2sin(x)-1) ?

The solution to expand (sin(x)-1)(2sin(x)-1) is 2sin^2(x)-3sin(x)+1

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expand (sin(x)-1)(2sin(x)-1)

expand

(sin (x) - 1) (2 sin (x) - 1)

2 sin^{2} (x) - 3 sin (x) + 1

Solution steps

(sin (x) - 1) (2 sin (x) - 1)

Apply FOIL method

(sin (x) - 1) (2 sin (x) - 1) : 2 sin^{2} (x) - 3 sin (x) + 1

= 2 sin^{2} (x) - 3 sin (x) + 1

\frac{( y ^{2} - 1 ) ( 3 x ^{2} + 8 x )}{y}

- (\frac{5 s ^{2} - 2 s + 1}{s ( s + 3 ) ( s - 1 )})

x^{2} y^{''} (x) - x (x + 2) y^{'} (x) + (x + 2) y

sin (a) (tan (a) + csc (a))

(x + \frac{3}{2}) (x^{2} + 3 x + y^{2})

What is expand (sin(x)-1)(2sin(x)-1) ?
The solution to expand (sin(x)-1)(2sin(x)-1) is 2sin^2(x)-3sin(x)+1