Question

Factorise the following:
(i) x³-2x²-x+2
(ii) x³-3x²-9x-5
(iii) x³+13x²+32x+20
(iv) 2y³+y²-2y-1


Needed urgently. Answering even a single one would be fine. ( spam answers will be reported)​

Answer 1

Answer:

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(i)

x³-2x²-x+2

x³+x²-3x²-3x+2x+2

x²(x+1)-3x(x+1)+2(x+1)

(x²-3x+2)(x+1)

(x²-x-2x+2)(x+1)

[(x(x-1)-2(x-1)](x+1)

(x-2)(x-1)(x+1)

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(ii)

x³-3x²-9x-5

x³+x²-4x²-4x-5x-5

x²(x+1)-4x(x+1)-5(x+1)

(x²-4x-5)(x+1)

(x²+x-5x-5)(x+1)

[x(x+1)-5(x+1)](x+1)

(x-5)(x+1)(x+1)

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(iii)

x³+13x²+32x+20

x³+x²+12x²+12x+20x+20

x²(x+1)+12x(x+1)+20(x+1)

(x²+12x+20)(x+1)

[x²+2x+10x+20](x+1)

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

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

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(iv)

2y³+y²-2y-1

2y³+2y²-y²-y-y-1

2y²(y+1)-y(y+1)-1(y+1)

(2y²-y-1)(y+1)

(2y²-2y+y-1)(y+1)

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

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

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Answer 2

Answer:

Too hard friend next question