因式分解 1-cos^3(2x)

解答

因式分解

1 - cos^{3} (2 x)

- (cos (2 x) - 1) (cos^{2} (2 x) + cos (2 x) + 1)

求解步骤

1 - cos^{3} (2 x)

因式分解出通项

- 1

= - (cos^{3} (2 x) - 1)

分解

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

= - (cos (2 x) - 1) (cos^{2} (2 x) + cos (2 x) + 1)

f a c t or a x + ai y + x ib - b y

f a c t or 36 - x^{8}

f a c t or 8 x y + 56 x + 7 k y + 49 k

f a c t or 2 ab - 6 a c + 3 b - 9 c

f a c t or (2 x^{2}) + 2 x + 5