Преобразуйте в многочлен:
а) ( 7 − 8 b ) 2 ; {\displaystyle (7-8b)^{2};} б) ( 0 , 6 + 2 x ) 2 ; {\displaystyle (0,6+2x)^{2};} в) ( 1 3 x − 3 y ) 2 ; {\displaystyle \left({\frac {1}{3}}x-3y\right)^{2};} г) ( 4 a + 1 8 b ) 2 ; {\displaystyle \left(4a+{\frac {1}{8}}b\right)^{2};} д) ( 0 , 1 m + 5 n ) 2 ; {\displaystyle (0,1m+5n)^{2};} е) ( 12 a − 0 , 3 c ) 2 {\displaystyle (12a-0,3c)^{2}}
а) ( 7 − 8 b ) 2 = 49 − 112 b + 64 b 2 ; {\displaystyle (7-8b)^{2}=49-112b+64b^{2};} б) ( 0 , 6 + 2 x ) 2 = 0 , 36 + 2 , 4 x + 4 x 2 ; {\displaystyle (0,6+2x)^{2}=0,36+2,4x+4x^{2};} в) ( 1 3 x − 3 y ) 2 = 1 9 x 2 − 2 x y + 9 y 2 ; {\displaystyle \left({\frac {1}{3}}x-3y\right)^{2}={\frac {1}{9}}x^{2}-2xy+9y^{2};} г) ( 4 a + 1 8 b ) 2 = 16 a 2 + a b + 1 64 b 2 ; {\displaystyle \left(4a+{\frac {1}{8}}b\right)^{2}=16a^{2}+ab+{\frac {1}{64}}b^{2};} д) ( 0 , 1 m + 5 n ) 2 = 0.01 m 2 + m n + 25 n 2 ; {\displaystyle (0,1m+5n)^{2}=0.01m^{2}+mn+25n^{2};} е) ( 12 a − 0 , 3 c ) 2 = 144 a 2 − 7 , 2 a c + 0 , 09 c 2 {\displaystyle (12a-0,3c)^{2}=144a^{2}-7,2ac+0,09c^{2}}