What is the difference of the polynomials? open paren m squared n squared minus 7 close paren minus open paren m n plus 4 close paren

Subtract the second polynomial by distributing the minus sign: (m²n² − 7) − (mn + 4) = m²n² − 7 − mn − 4. Combine the constants, −7 − 4 = −11, to get m²n² − mn − 11. This matches choice C.

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