solutuin of i think identity sums
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Hlo
x = 2 + √2
y = 2 - √2
x² + y² = ?
( 2 + √2) ² + ( 2 - √2 ) ²
( a + b )² = a² + b² + 2ab
( a - b )² = a² + b² - 2ab
( 4 + 2 + 4√2 ) + ( 4 + 2 - 4√2 )
( 6 + 4√2 ) + ( 6 - 4√2 )
6 + 4√2 + 6 - 4√2
6 + 6
12✔✔
hope it helps...
x = 2 + √2
y = 2 - √2
x² + y² = ?
( 2 + √2) ² + ( 2 - √2 ) ²
( a + b )² = a² + b² + 2ab
( a - b )² = a² + b² - 2ab
( 4 + 2 + 4√2 ) + ( 4 + 2 - 4√2 )
( 6 + 4√2 ) + ( 6 - 4√2 )
6 + 4√2 + 6 - 4√2
6 + 6
12✔✔
hope it helps...
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