因式分解 1-sqrt(4)x-1

解答

因式分解

1 - 4 x - 1

- 2 x

求解步骤

1 - 4 x - 1

4 = 2

= 1 - 2 x - 1

对同类项分组

= - 2 x + 1 - 1

1 - 1 = 0

= - 2 x

f a c t or \frac{x ^{2} - 2 x - 3}{x - 3}

f a c t or 2 x - x^{2}

f a c t or \frac{5 x ^{3}}{2 x ^{3} + 4}

f a c t or 2 (a) (a + b)

f a c t or 2 (3 a - 2 (3 a - 1) + 4 (a + 1))