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(45.1的3次方-13.9的3次方)/31.2+45.1*13.9=
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(45.1的3次方-13.9的3次方)/31.2+45.1*13.9=
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(45.1的3次方-13.9的3次方)/31.2+45.1*13.9
=(45.1-13.9)(45.1²+45.1*13.9+13.9²)/31.2+45.1*13.9
=45.1²+45.1*13.9+13.9²+45.1*13.9
=(45.1+13.9)²
=59²
=3481
=(45.1-13.9)(45.1²+45.1*13.9+13.9²)/31.2+45.1*13.9
=45.1²+45.1*13.9+13.9²+45.1*13.9
=(45.1+13.9)²
=59²
=3481
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