Question

x^{3} + 3 x^{2} - 5x + 8 si X= 1/2

Answer 1

x³+3x²-5x+8 si x=1/2
(1/2)³+3*(1/2)²+5*(1/2)+8
(1/8)+3*(1/4)+5/2+8
1/8+3/4+5/2+8
91/8 ∴ 11.37