subtract 18 ab2c +23ab-b2 from 23ab2c - 5ab + 8b2
user who right the useless answer is a mad person
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Answer:
23ab2c-5ab+8b2-(18ab2c+23ab-b2)
=23ab2c-5ab + 8b2-18ab2c-23ab+b2
=5ab2c-28ab+8b2+b2
=5ab2c-28ab+9b2.
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