Question

$(x - 3) {}^{2} + 9x$

Answer 1

( x – 3 )² + 9x

Using identity

$<b>( a – b )² = a² + b² – 2ab</b>$

Here, a = x, b = 3

= ( x )² + ( 3 )² – 2 ( x ) ( 3 ) + 9x

= x² + 9 – 6x + 9x

= $<b>x² + 3x + 9</b>$

Answer 2

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