What is expand (3cos(x)-2)(2cos(x)+1) ?

The solution to expand (3cos(x)-2)(2cos(x)+1) is 6cos^2(x)-cos(x)-2

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expand (3cos(x)-2)(2cos(x)+1)

expand

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

6 cos^{2} (x) - cos (x) - 2

Solution steps

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

Apply FOIL method

(3 cos (x) - 2) (2 cos (x) + 1) : 6 cos^{2} (x) - cos (x) - 2

= 6 cos^{2} (x) - cos (x) - 2

(1 - ln (π)) π^{x}

\frac{( w ^{2} - 2 w )}{( w ^{2} + 3 w - 10 )}

\frac{v}{( u + v ) ^{2}}

\frac{5 ( 5 + 5 )}{8 π ^{2}}

\frac{3 ( - x ^{2} - 16 )}{( x ^{2} - 16 ) ^{2}}

What is expand (3cos(x)-2)(2cos(x)+1) ?
The solution to expand (3cos(x)-2)(2cos(x)+1) is 6cos^2(x)-cos(x)-2