1 вариант

Решение: 1) 7^2 = 49, 18^1 = 18, 0^4 = 0, 4^3 = 64, 2^2 = 4, 14^2 = 196. 2) 546 = 500 + 40 + 6, 30303 = 30000 + 300 + 3, 100011 = 100000 + 10 + 1. 3) (2x)^3 = 2^3 * x^3, (b-x)^4 = b^4 - 4b^3x + 6b^2x^2 - 4bx^3 + x^4. 4) 26x + 5 + 14x = 40x + 5, 123a - 14a = 109a, 56 + 19y + 15x + 42y - 5x = 51x + 61y + 56. 5) x^3 + 25 = 150, x^3 = 125, x = 5.