find the value of a + b when a minus b is equal to 1 and a square minus b square is equal to 7
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2
Answer:
7
Step-by-step explanation:
a + b = ?
a - b = 1
a² - b² = 7
we can write ,
a² - b² = (a+b) ( a - b) = 7
(a + b) × 1 = 7
( a + b ) = 7, ans
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