Question

factos of .......
$(1 - 6z + 9z {}^{2})$

Answer 1

$9 {z}^{2} - 6z + 1 \\ using \: splitting \: the \: middle \: term \\ 9 {z}^{2} - 3z - 3z + 1 \\ 3z(3z - 1) - 1(3z - 1) \\ (3z - 1)(3z - 1)$

Answer 2

Hey friend✋! here is your answer

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◆To factorise- (1-6z+9z^2)

✅Firstly arrange according to degree of polynomial

✔️9z^2-6z+1
✅By middle term splitting

⭕️9z^2-3z-3z+1

✅Taking common

✅3z(3z-1)-1(3z-1)

✅(3z-1)(3z-1)=0 { This are the factors}

✔️3z-1=0 & 3z-1=0

✔️z=1/3 & z=1/3

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⭐️ Hope it helps you⭐️

#Rohan