Question

(2a-3)^3
please help​

Answer 1

Answer:

$\huge \sf \underline{given \ \: : }$

$\bf \: expand \: \: {(2a - 3)}^{2}$

$\huge \sf \underline{ identity \: used\ \: : }$

$\bf {(x - y)}^{2} = {x}^{2} - 2xy - {y}^{2}$

$\huge \sf \underline{ solution\ \: : }$

$\sf \to {(2a - 3)}^{2}$

$\sf \to {2a}^{2} - 2(2a \times 3) + {3}^{2}$

$\sf \to4 {a}^{2} + 2(6a) + 9$

$\purple{ \sf{ \to {4a}^{2} - 6a + 9}}$

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