Question

if P (x) =4x^8 + 1 x^2 - 6x + 5. Then find the value of p(-2), p 1/2​

Answer 1

Answer:

p(x)=4x^8+1x²-6x+5.

p(-2)=4(-2)^8+1(-2)²-6(-2)+5.

=4(-256)+1(4)+12+5. (Because -×-=+).

=-1024+4+12+5.

=-1020+12+5.

=-1008+5.

=-1003.

p(1/2)=4(1/2)^8+1(1/2)²-6(1/2)+5.

=4(1/256)+1(1/4)-6/2+5.

=4/256+1/4-3+5.

=1/64+1/4-3+5.

=1+16-192+320/64. (Because LCM of 64 & 4 is 64).

=17-192+320/64.

=-175+320/64.

=145/64.

(or).

=2.265625.

I think this is your answer.