Question

factorise 9a^2-36ab+36b^2​

Answer 1

$9 {a}^{2} - 36ab + 36 {b}^{2}$

$9 {a}^{2} = 3 \times 3 \times a \times a$

$36ab = 2 \times 2 \times 3 \times 3 \times a \times b$

$36b {}^{2} = 2 \times 2 \times 3 \times 3 \times b \times b$

$9( {a}^{2} - 4ab \: + 4 {b}^{2} )$

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