Question

factorize the folloeing expressions using suitable agebraic identity
$81 - 18y + {y}^{2}$
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Answer 1

Step-by-step explanation:

$81 - 18y + {y}^{2}$

$= ( {9)}^{2} - 2 \times 9 \times y + ( {y)}^{2}$

$= ( {9 - y)}^{2}$