П О М О Г И Т Е ГОЛОВУ ЛОМАЮ

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((-0.1)+(-0.2))((-0.1-(-0.2)+2))\\\\((-0.1)+(-0.2))((-0.1-(-0.2)+2))=(0.1)*2.1+(-0.2)*2.1=-0.1*2.1-0.2*2.1=2.1(-0.1-0.2)=2.1(-0.3)=-0.63\\\\Otvet:\;-0.63" class="latex-formula" id="TexFormula2" src="https://tex.z-dn.net/?f=m%3D-0.1%2C%5C%3B%5C%3Bn%3D-0.2%5C%5C%5C%5C%28m%2Bn%29%28m-n%2B2%29-%3E%28%28-0.1%29%2B%28-0.2%29%29%28%28-0.1-%28-0.2%29%2B2%29%29%5C%5C%5C%5C%28%28-0.1%29%2B%28-0.2%29%29%28%28-0.1-%28-0.2%29%2B2%29%29%3D%280.1%29%2A2.1%2B%28-0.2%29%2A2.1%3D-0.1%2A2.1-0.2%2A2.1%3D2.1%28-0.1-0.2%29%3D2.1%28-0.3%29%3D-0.63%5C%5C%5C%5COtvet%3A%5C%3B-0.63" title="m=-0.1,\;\;n=-0.2\\\\(m+n)(m-n+2)->((-0.1)+(-0.2))((-0.1-(-0.2)+2))\\\\((-0.1)+(-0.2))((-0.1-(-0.2)+2))=(0.1)*2.1+(-0.2)*2.1=-0.1*2.1-0.2*2.1=2.1(-0.1-0.2)=2.1(-0.3)=-0.63\\\\Otvet:\;-0.63">

0.1-0.2(0.1-0.2+2)=2.4

Объяснение:

Я ХЗ