1 ЗАДАНИЕ
-10ab-5,4b-(-4,4b+18ab)=
-10ab-5,4b+4,4b-18ab=
-28ab-b
ЗАДАНИЕ 2
(4c-5d)²=16c²-40dc+25d²
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Answers & Comments
1 ЗАДАНИЕ
-10ab-5,4b-(-4,4b+18ab)=
-10ab-5,4b+4,4b-18ab=
-28ab-b
ЗАДАНИЕ 2
(4c-5d)²=16c²-40dc+25d²