(m-3)²+(m-2) (m+2) = якщо m = -2.5. .........,.. ,...................​

(m-3)²+(m-2)(m+2)=m²-6m+9+m²-4=2m²-6m+5

При m=-2,5: 2*(-2,5)²-6*(-2,5)+5=2*6,25+15+5=12,5+15+5=32,5