(√9•√2+√36•√2-√4•√3)(√9•√2+√36•√2+√4•√3)=(3•√2+6•√2-2•√3)(3•√2+6•√2+2•√3)=9•√4+18•√4+6•√6+18•√4+36•√4+12•√6-6•√6-12•√6-4•√9=9•2+18•2+18•2+36•2-4•3=18+36+36+72-12=150
Вот так будет правильней)
4x=17-5
x=12:4
x=3
________
3*4=17-5
12=12
А) 8¹¹-8¹⁰-8⁹ / 4¹⁵-4¹⁴-4¹³ = 8⁹(8²-8-1) / 4¹³(4²-4-1) = (2³)⁹(64-8-1) / (2²)¹³(16-4-1) =
= 2²⁷ *55 / 2²⁶ * 11 = 2*5 = 10
б) 27⁵-27⁴ / 9⁸+9⁷+9⁶ = 27⁴(27-1) / 9⁶(9²+9+1) = 27⁴ * 26 / 9⁶(81+9+1) =
= (3³)⁴ * 26 / (3²)⁶ * 91 = 3¹² * 26 / 3¹² * 91 = 2/7