a) (t-3)*(t+5) = t^2 + 5t - 3t - 15 = t^2 + 2t - 15
б) (4x-7)*(3x-8) = 12x^2 - 32x - 21x + 56 = 12x^2 - 53x + 56
в) (b-2)*(b^2 + 3b - 4) = b^3 + 3b^2 - 4b - 2b^2 - 6b + 8 = b^3 + b^2 - 10b + 8
a) (t-3)*(t+5) = t^2 + 5t - 3t - 15 = t^2 + 2t - 15
б) (4x-7)*(3x-8) = 12x^2 - 32x - 21x + 56 = 12x^2 - 53x + 56
в) (b-2)*(b^2 + 3b - 4) = b^3 + 3b^2 - 4b - 2b^2 - 6b + 8 = b^3 + b^2 - 10b + 8