2) (2-0,9x)(0,9x + 2) - 10+ 0,81x2 = -6; 3) (x - 1,5)(1,5 + 3) + (6 - x)(6 + x) = 33,75;
4)(2,1 - 3)(x + 2,1)-(5 - 3)(x + 5) = -20,59.
​

Tcgdfh    2   18.01.2021 07:34    0