Question

Evalúa la expresión y4-5y3+3y2-y+1 si y =2

Answer 1

y=2

y⁴-5y³+3y²-y+1 =

(2)⁴-5(2)³+3(2)²-(2)+1 =

16-5(8)+3(4)-2+1 =

16-40+12-1 =

-24+11 =

-13

Answer 2

2\cdot \:4-5\cdot \:2\cdot \:3+3\cdot \:2\cdot \:2-2+1 = 11
Remplazando y.