因式分解 a^2-4b^2-a-2b

解答

因式分解

a^{2} - 4 b^{2} - a - 2 b

(a + 2 b) (a - 2 b - 1)

求解步骤

a^{2} - 4 b^{2} - a - 2 b

因式分解

a^{2} - 4 b^{2} : (a + 2 b) (a - 2 b)

因式分解

- a - 2 b : - (a + 2 b)

= (a + 2 b) (a - 2 b) - (a + 2 b)

因式分解出通项

(a + 2 b) : (a + 2 b) (a - 2 b - 1)

= (a + 2 b) (a - 2 b - 1)

s im pl i f y \frac{{ ( 7 ^{m} ) ^{- 4} \cdot ( 1 4 ^{m} ) ^{3} }}{( ( 128 \cdot 7 ^{2} ) ^{m} )}

f a c t or m^{3} + 6 m^{2} + 12 m + 8

f a c t or 75 b^{2} \cdot c^{3} + 60 b \cdot c^{6}

s im pl i f y 1 x + 3 x

s im pl i f y \frac{4}{3 x ^{n + 1} \cdot x ^{2} x y}