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

The solution to expand (2sin(x)-2)(2cos(x)+1) is 2sin(x)+2sin(2x)-4cos(x)-2

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

expand

(2 sin (x) - 2) (2 cos (x) + 1)

2 sin (x) + 2 sin (2 x) - 4 cos (x) - 2

Solution steps

(2 sin (x) - 2) (2 cos (x) + 1)

Apply FOIL method

(2 sin (x) - 2) (2 cos (x) + 1) : 2 sin (x) + 2 sin (2 x) - 4 cos (x) - 2

= 2 sin (x) + 2 sin (2 x) - 4 cos (x) - 2

\frac{- 5}{7} (x + 8)

\frac{- 1 + 65}{8}

75 \cdot 93

e^{y} \cdot (y^{2} - x^{2})

(2 x + 12 x^{3}) (5 x^{3} + 3 + ln (x))

What is expand (2sin(x)-2)(2cos(x)+1) ?
The solution to expand (2sin(x)-2)(2cos(x)+1) is 2sin(x)+2sin(2x)-4cos(x)-2