Решите плз очень срочно !!!!
2.
x + (25x^2 + 20x +4) = 25 + 25x^225x^2 + 21x + 4 = 25 + 25x^2 25x^2 + 21x + 4 - 25 - 25x^2 = 021x - 21 = 021x = 21x = 21/21 x = 1
1) ... = 4x^2 + 36x +81 - 4x^2 - 31x = 5x + 81
= 5 * (-16.2) + 81 = -81 + 81 =0
2) ... = 0,01x^2 - 1,6x + 64 + 0,01x^2 + 1,6x + 64 = 0,02x^2 + 128
= 0,02 * (-10)^2 + 128 = 0,02 * 100 + 128 = 130