How to solve an inequality problem A. B is known to be a real number A & # 178; + B & # 178; + 5 ≥ 2 (2a-b) is an inequality, right

∵(a-2)²+(b+1)²≥0
a²-4a+4+b²+2b+1≥0
a²+b²+5≥4a-2b
∴a²+b²+5≥2(2a-b)

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