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Question
If ab = 21 and $$\frac{{{{\left( {a + b} \right)}^2}}}{{{{\left( {a - b} \right)}^2}}}$$   = $$\frac{{25}}{4}{\text{,}}$$  then the value of a2 + b2 + 3ab is?
Options:
A .  115
B .  121
C .  125
D .  127
Answer: Option B

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