U se : ( a + b ) 2 = a 2 + 2 ab + b 2 ========================= ( y + 10 ) 2 = y 2 + 2 y × 10 + 1 0 2 = y 2 + 20 y + 100
To solve ( y + 10 ) 2 , you can use the binomial expansion formula which will give you the result y 2 + 20 y + 100 . This breaks down into calculating each term as follows: the first term is y 2 , the second term is 20 y , and the third term is 100 . Thus, the complete expansion is y 2 + 20 y + 100 .
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