Question

Factories 4a^2 - 9b^2​

Answer 1

Answer:

$1.factorise$

$(i)4a {}^{2} - 9b {}^{2}$

$= (2a) {}^{2} - (3b) {}^{2}$

$using \: identity$

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

$= (2a + 3b)(2a - 3b)$

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