Question

N3. Довести momожність (x+1)(x²-2х+5) +(x²+3)(1-x) =8​

Answer 1

Объяснение:

$(x + 1)( {x}^{2} - 2x + 5) + (x {}^{2} + 3)(1 - x) = {x}^{3} - 2 {x}^{2} + 5x + {x}^{2} - 2x + 5 + {x}^{2} - {x}^{3} + 3 - 3x = 8$

8=8