what is the answer
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a-b=4
squaring both sides we get
(a-b)²=4²
a²+b²-2ab=16 first equation
a+b=6
squaring both sides we get
(a+b)²=36
a²+b²+2ab=36 second equation
subtracting first equation from second equation we get
4ab=20
ab=5
now putting value of ab in first equation we get
a²+b²-10=16
a²+b²=26
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