1) (7-8b)²=64b²-112b+49
2) (0,6+2x)²=(3/5+2x)²=9/25+12/25x+4x²
3) (-x+5)²=x²-10x+25
4) (3x-y)²=9x²-6xy+y²
5) (b+4a)²=b²+8ab+16a²
6) (-2-z)²=z²+4z+4
7) (5n+0.1m)²=25n²+mn+1/100m²
8) (12a-0.3c)²=144a²-36/5ac+9/100c²
9) (-n+4)²=n²-8n+16
10) (-10-m)²=m²+20m+100
1) (7-8b)²=64b²-112b+49
2) (0,6+2x)²=(3/5+2x)²=9/25+12/25x+4x²
3) (-x+5)²=x²-10x+25
4) (3x-y)²=9x²-6xy+y²
5) (b+4a)²=b²+8ab+16a²
6) (-2-z)²=z²+4z+4
7) (5n+0.1m)²=25n²+mn+1/100m²
8) (12a-0.3c)²=144a²-36/5ac+9/100c²
9) (-n+4)²=n²-8n+16
10) (-10-m)²=m²+20m+100