Question

Factorise  4 – 12z + 9z² 
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Answer 1

$\huge\red {Answer}$

$4 - 12z + {9z}^{2}$

${2}^{2} - 2 \times 2 \times 3z + {3z}^{2}$

Using Identity

${(a - b)}^{2} = {a}^{2} - 2ab + {b}^{2}$

${(2 - 3z)}^{2}$

$(2 - 3z)(2 - 3z)$

Answer 2

Answer:

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