(7.3+3.7)^2÷(7.3)^2+(3.7)^2+(7.4)(7.3)
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Step-by-step explanation:
(7.3+3.7)^2÷(7.3^2+3.7^2+7.4*7.3)
=11^2÷(7.3^2+3.7^2+2*7.3*3.7)
=121÷(7.3+3.7)^2
=121÷(11)^2=1
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