Question

ucts.
(ii) (2a-7)(2a-7)​

Answer 1

${(2a - 7)}^{2}$

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Answer 2

$<font color = mehroom>$

(2a-7)(2a-7)

$<font color = purple>$

( 2a — 7 ) ( 2a — 7 ) = ( 2a — 7 )²

$<font color = red>$

Using Identity

$<font color = green>$

( a — b )² = a² — 2ab + b²

( 2a )² — 2 × 2a × 7 + ( 7 )²

4a² — 28a + 49