Question

${27}^{2} explain \: in \: form \: of \: (x + y) {}^{2}$
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Answer 1

Step-by-step explanation:

27² can be written as (20 + 7)²

(a + b)² = a² + 2ab + b²

(20+7)² = 20² + 2×20×7 + 7²

= 400 + 280 + 49

= 729

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