Question

Factorise

a. x^3 + 13x^2+ 32x + 20

b. 2y^3+ y^2– 2y – 1

please give me the answer fast .it's urgent...​

Answer 1

Answer:

a] (x+1)(x+10)(x+2)

b] (y-1)(y+1)(2y+1)

Step-by-step explanation:

a)x³+13x²+32x+20

a)x³+13x²+32x+20if x=-1 then equation become 0

x²(x+1)+12x(x+1)+20(x+1)

x²(x+1)+12x(x+1)+20(x+1)(x+1)(x²+12x+20)

(x+1)(x²+10x+2x+20)

(x+1)(x+10)(x+2)

b)2y³+y²-2y-1if y=1 then equation become 0

2y²(y-1)+3y(y-1)+1(y-1)

(y-1)(2y²+3y+1)

(y-1)(2y²+2y+y+1)

(y-1)(2y+1)(y+1)