2(a - 9)²
Please answer this using Identities
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2 ( a - 9 ) ²
Using the identity
❥ ( a - b ) ² = a² - 2ab + b²
a² - 2 x a x 9 + (9)²
a² - 18a + 81
2 ( a² - 18a + 81 )
2a² - 36a + 162
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