因式分解 9y^3+y^2+9y+1

解答

因式分解

9 y^{3} + y^{2} + 9 y + 1

(9 y + 1) (y^{2} + 1)

求解步骤

9 y^{3} + y^{2} + 9 y + 1

= (9 y^{3} + y^{2}) + (9 y + 1)

从

9 y^{3} + y^{2}

分解出因式

y^{2}

y^{2} (9 y + 1)

= y^{2} (9 y + 1) + (9 y + 1)

因式分解出通项

(9 y + 1) : (9 y + 1) (y^{2} + 1)

= (9 y + 1) (y^{2} + 1)

2 x - 3 \leq 4 - 7 x

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

f a c t or 3 x^{3} - 12 x y + x^{2} y - 4 y^{2}

f a c t or 3 y^{2} + 20 y - 7

f a c t or - 3 w^{2} + 19 w + 14