Ответ:7
a)(k+n)2=( k+ n)( k+ n) r)(3+ a)2=(3+ a)(3+ a)
1. 6ab⁵ = -7
1) 3*6ab⁵ = 18ab⁵ = 3*(-7) = -21
2) (6ab⁵)² = 36a²b¹⁰ = (-7)² = 49; 36a²b¹⁰:6 = 6a²b¹⁰ = 49÷6 =
2.
а) (2+3х)^2=4+12x+9x^2