1) = (10х+у)²
2) = (в-2а)²
3) = (7х+2у)²
4) = (11а-2х)²
5) = 4х²-12х+9
6) = а²+4ав+4в²-46²
7) = а²в²-14ав+49
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1) = (10х+у)²
2) = (в-2а)²
3) = (7х+2у)²
4) = (11а-2х)²
5) = 4х²-12х+9
6) = а²+4ав+4в²-46²
7) = а²в²-14ав+49