Question

please help me please ❣❤​

Answer 1

i and iv answers in image

$\bold{ii - x^3 – 3x^2 – 9x – 5}$

$\bold{x^3 + x^2 – 4x^2 – 4x – 5x – 5}$

$\bold{x^2 (x + 1) – 4x (x + 1) -5(x + 1)}$

$\bold{(x + 1)(x^2 – 4x – 5)}$

$\bold{(x + 1)(x^2 – 5x + x – 5)}$

$\bold{(x + 1) (x – 5)(x + 1)}$

$\bold{(x + 1), (x – 5) \: and \: (x + 1)}$

$\bold{iii-x^3+13x^2 +32x+20 \: is}$

$\small\bold{x^3+x^2 +12x^2 +12x+20x+20}$

$\small\bold{=x^2 (x+1)+12x(x+1)+20(x+1)}$

$\bold{=(x−1)(x^2 +12x+20)}$

$\bold{=(x−1)(x^2 +10x+2x+20)}$

$\small \bold{=(x+1)[x(x+10)+2(x+10)]}$

$\bold{=(x+1)(x+2)(x+10)}$

Answer 2

Answer:

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