Ответ:
Объяснение:
(-10t-11b)^2=
=100t^2+110tb+110tb+121b^2=
=100t^2+220tb+121b^2
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Ответ:
Объяснение:
(-10t-11b)^2=
=100t^2+110tb+110tb+121b^2=
=100t^2+220tb+121b^2