1.Найдите значение выражений ,используя ФСУ 79²=

38²=

59²=

21²=

32²=

61²=

47²+2∙47∙53+53²=

78²-2∙78∙38+38²=​
2.Вычислите
15²=
45²=
75²=
25²=
55²=
85²=
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