Question

No polinômio p(x)x3 -kx2 + x +1, determine k se: a) p(1) = 0

Answer 1

p(x)=x^3 - k.x^2 + x+1

como p(1)=0

p(1)=(1)^3 - k.(1)^2 + 1 + 1

p(1)=1 - k + 1 + 1

p(1)=3-k

3-k=0

K=3