Question

Find the value of each of the following polynomials at the indicated value of variables:(i) `p(x)=5x^2-3x+7`at `x=1` (ii) `q(y)=3y^3-4y+sqrt(11)`at `y=2`(iii) `p(t)=4t^4+5t^3-t^2+6`at `t=a`

Answer 1

(i) `p(1) = 5(1)^2 - 3(1) + 7`
`= 5-3 + 7 = 9`
(ii) `q(2) = 3(2)^3 - 4(2) + sqrt11`
`= 3*8 - 4(2) + sqrt11 = 16+ sqrt11`
(iii) `p(a) = 4(a)^4 + 5(a^3) - (a)^2 + 6`
answer